These are in chronological order, and were selected not by me, but by www.filmsite.org, one of the greatest movie sites I have ever seen.

1. Ben Cameron's desperate charge on Union lines, and subsequent homecoming in "The Birth of a Nation" (1915).

2. Anna Moore's rescue from the ice floes in "Way Down East" (1920).

3. Harold Lloyd's frantic climb up a skyscraper (and a clock) in "Safety Last" (1923).

4. McTeague and Marcus's violent and greedy struggle for the gold in Death Valley, in the climax of "Greed" (1924).

5. The Russian soldiers' massacre of revolutionaries in Odessa, in "Battleship Potemkin" (1925).

6. The long parting of the American soldier and his French love to go to battle in "The Big Parade" (1925).

7. Charlie Chaplin's feast of his own boot in "The Gold Rush" (1925).

8. The Phantom's thrilling unmasking in the original "The Phantom of the Opera" (1925).

9. Buster Keaton solemnly riding on a train crossbar after being rejected in "The General" (1927).

10. Al Jolson speaking those first spoken words ("You ain't heard nothing yet!") in "The Jazz Singer" (1927).

11. Rotwang forming his android in the face of Maria (and the basic look of the film) in "Metropolis" (1927).

12. The farmer being seduced by the vampish city woman to leave his house and wife in "Sunset" (1927).

13. The majestic shot up the skyscraper, a fade through the window, and the grand sweep across the infinite paper-pushers of the city in "The Crowd" (1928).

14. Paul tenderly trying to reach out for the butterfly (and its ghastly result) in "All Quiet on the Western Front" (1930).

15. The Tramp meeting up with the not-so-blind girl again in the climax of "City Lights" (1931).

16. The stunning creation of the Monster in "Frankenstein" (1931)

17. Foul Tom Powers smashing a grapefruit into his girlfriend's face in "Public Enemy" (1931).

18. The three Busby Berkely production numbers ("Honeymoon Hotel", "By a Waterfall", and "Shanghai Lil") of "Footlight Parade" (1933).

19. Director Warner Baxter's impassioned speech to the understudy/chorus girl to go on stage in "42nd Street" (1933).

20. The climb up the Empire State Building, and the attack on Kong in "King Kong" (1933).

21. The exile and close-up of the Queen in the finale of "Queen Christina" (1933).

22. The hitchiking sequence of "It Happened One Night" (1934).

23. The disaster of a dinner party in "Alice Adams" (1935).

24. The infamous (and hilarious) stateroom scene of "A Night at the Opera" (1935).

25. Fred Astaire's "Top Hat, White Tie, and Tails" solo, and his dance with Ginger Rogers for "Cheek to Cheek" in "Top Hat" (1935).

26. Charlie Chaplin's frenzied (and futile) battle against the conveyor belt in "Modern Times" (1936).

27. The final romantically powerful deathbed scene of "Camille" (1936).

28. The open-air hospital scene, with the thousands upon thousands of wounded, in "Gone With the Wind" (1939).

29. Gunga Din's final heroic warning with the bugle in the climax of "Gunga Din" (1939).

30. Jefferson Smith's desperate filibuster, and condemnation of the corrupt Senator Paine at the end of "Mr. Smith Goes to Washington" (1939).

31. The famous introduction of the Ringo Kid, and also John Wayne's first major-league role, in "Stagecoach" (1939).

32. The "We're Off to See the Wizard" number in "The Wizard of Oz" (1939).

33. Herr Hynkel doing his ballet with the globe in "The Great Dictator" (1940).

34. The slow tracking shot along the articles which belonged to Charles Foster Kane, and the final revelation of what Rosebud is, in the end of "Citizen Kane" (1941).

35. The innocent adventurer Charles Pike being slowly seduced by Jean Harrington in "The Lady Eve" (1941).

36. The arrest of Brigid, and the final few lines of "The Maltese Falcon" (1941).

37. The final climax of "Casablanca" (1942), with the tearful departure of Rick and Ilsa, the famous disappearance into the fog, and three oft-quoted movie lines.

38. The end of "Now, Voyager" (1942), with the final lighting of the cigarettes, and a memorable speech by Charlotte.

39. The battle on the Statue of Liberty at the end of "Saboteur" (1942).

40. Jimmy Cagney's dazzling dance of the title number in "Yankee Doodle Dandy" (1942).

41. The low-key yet amorous courtship scene on the steps of the apartment in "The More the Merrier" (1943).

42. Lauren Bacall's infamous seduction of Humphrey Bogart (and the lesson in whistling) in "To Have and Have Not" (1944).

43. The joyful homecoming of Al Stephenson in "The Best Years of Our Lives" (1946).

44. The final, bloody shootout of lovers in "Duel in the Sun" (1946).

45. Gilda's bawdy dance of "Put the Blame on Mame, Boys" in "Gilda" (1946).

46. The charged phone conversation between George, Mary, and Sam in "It's a Wonderful Life" (1946).

47. The long, long kiss between Devlin and Alicia in "Notorious" (1946).

48. The infamous shootout in the Hall of Mirrors at the climax of "The Lady From Shanghai".

49. Howard's laughing belittlement of his impatient prospecting partners in "The Treasure of the Sierra Madre" (1948).

50. The final revenge in "The Heiress" (1949), where Catherine gets her satisfying yet perverse revenge on Townsend.

51. Holly Martins' fleeting glimpse of his "dead" friend, Harry Lime in "The Third Man" (1949).

52. The sizzling climax (and the oft-repeated lines) of the life of Cody Jarrett in "White Heat" (1949).

53. Margo's lip-sneering, paranoid warning just before a birthday party begins in "All About Eve" (1950).

54. The end of "Sunset Boulevard" (1950), where Norma Desmond is lured out of her mansion, totally slipped into her fantasies.

55. The romantic dance sequence and powerful talk on the balcony in "A Place in the Sun" (1951).

56. Stanley's animalistic cry for Stella in "A Streetcar Named Desire" (1951).

57. The final minutes before twelve, with Marshal Kane preparing to face his fate in "High Noon" (1952).

58. The joyous title dance sequence of "Singin' in the Rain" (1952).

59. Lee Marvin's vicious punishment, involving a pot of coffee and a beautiful woman, in "The Big Heat" (1953).

60. The moonlit, extremely romantic beach/love sequence in "From Here to Eternity" (1953).

61. The final farewell and sad departure of Shane in "Shane" (1953).

62. Terry's sad speech, revealing his lost dreams and frustrations, in "On the Waterfront" (1954).

63. The sinister Powell's murder of Willa Harper, and the memorable shot of her body in the water in "The Night of the Hunter" (1955).

64. Marilyn Monroe's famous skirt scene on top of the subway grate in "The Seven Year Itch" (1955).

65. The revelation of the Id Creature, and the memorable shot of it terrorizing the flying saucer in "Forbidden Planet" (1956).

66. The juxtaposition of the open/closed door in the beginning and end of "The Searchers" (1956), symbolizing the fate of Ethan Edwards.

67. The amazing parting of the Red Sea in "The Ten Commandments" (1956).

68. Colonel Nicholson's determined struggle against Colonel Saito, and the joyous celebration on his success in "The Bridge on the River Kwai" (1957).

69. The final escape attempt between the two convicts in "The Defiant Ones" (1958).

70. The opening, sensational tracking shot across the Mexican border town in "Touch of Evil" (1958).

71. Judy's transformation into Madeleine, thanks to the obsessed Scottie, in "Vertigo" (1958).

72. The exciting chariot race of "Ben-Hur" (1959).

73. The infamous crop-dusting attack on Roger Thornhill in "North By Northwest" (1959).

74. Jerry's failed attempt to break up his marriage to Osgood in the ending of "Some Like It Hot" (1959).

75. The famous shower death sequence of Marion Crane in "Psycho" (1960).

76. Lawrence's match trick, and the striking shot of the Arabian sun in "Lawrence of Arabia" (1962).

77. The introduction of Lolita to Humbert Humbert in "Lolita" (1962).

78. The dinner/foreplay sequence in "Tom Jones" (1963).

79. The sweeping aerial opening, and title number of "The Sound of Music" (1965).

80. The "ballet of blood" finale of "Bonnie and Clyde" (1967).

81. Benjamin's desperate run and interruption of the wedding in the end of "The Graduate" (1967).

82. The "Dawn of Man" sequence, and the famous transition shot to space in "2001: A Space Odyssey" (1968).

83. The final, gallant run of Butch and Sundance against the Bolivian soldiers at the end of "Butch Cassidy and the Sundance Kid" (1969).

84. George's (and also, Jack Nicholson's) introduction, and his gleeful bird-flapping in "Easy Rider" (1969).

85. Yet another blood ballet, this time involving the "heroes" of the film in the grisly opening battle of "The Wild Bunch" (1969).

86. General Patton's opening speech in "Patton" (1970).

87. The disturbing "Singin' in the Rain" attack in "A Clockwork Orange" (1971).

88. The amazing chase sequence on the elevated train in "The French Connection" (1971).

89. The "Duelling Banjos" opening sequence in the harrowing "Deliverance" (1972).

90. The long opening sequence of "The Godfather" (1972), with the Don granting the many favors in the infamous underlit room.

91. The many gross-out and vicious exorcism sequences in "The Exorcist" (1973).

92. Jake's nose-slitting, courtesy of Roman Polanski, in "Chinatown" (1974).

93. McMurphy's infamous World Series playacting in "One Flew Over the Cuckoo's Nest" (1975).

94. The memorable montage of Rocky's energetic training in "Rocky" (1976).

95. The "You talkin' to me?" mirror sequence in "Taxi Driver" (1976).

96. Tony's iconic disco dancing in "Saturday Night Fever" (1977).

97. Jack's vicious attack with the axe, including the memorable line "Heeeeeere's Johnnnny!" in "The Shining" (1980).

98. The opening, breathless grab for the idol in "Raiders of the Lost Ark" (1981).

99. The restaurant sequence, in which Meg Ryan does her infamous "fake orgasm", in "When Harry Met Sally..." (1989).

100. Stern's typing of "Schindler's List" in the self-titled 1993 film.

The Martian Machines----firing and flying
"War of the Worlds" (1953)

The climatic battle between the Enterprise & Chang's ship----Star Trek VI

The Imperial Walkers---Empire Strikes Back

The final line "Tomorrow is another day."-Gone With The Wind

The Mooby Conference Room scene in Dogma.

"Finks! All of you finks!"

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Jay and Silent Bob's cameo in Scream 3.

"Dude it's Connie ••••••• Chung!"

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Carrie Fisher's cameo in Scream 3.

"I was up for the part of Princess Leia. But they gave it to the girl who slept wiht George Lucas."

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The Uncle F***er song from South Park: Bigger Longer & Uncut.

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The surprise ending of What Lies Beneath.

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The creative use of a boy band's song to show off the old heroes in Space Cowboys. (if you've seen the movie you know what I'm talking about).

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The 100 foot wave in The Perfect Storm.

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John Cusack being spit out onto the Jersey Turnpike after disocvering the "tunnel." Being John Malkovich.

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Iraqi interrogator wanting to know "what is up with Michael Jackson?" in Three Kings.

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Wolverine giving Cyclops the middle claw. X-Men.

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The confession scene in Almost Famous.

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Tom Servo's underwear collection. Mystery Science Theater 3000 The Movie.

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Keanu Reeve's failed attempt to leap tall buildings in a single bound. The Matrix.

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Regis with the baseball bat. Little Nicky.

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Guess who the nurse is pushing the guy's wheelchair. Urban Legends Final Cut.

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Jason Biggs switching his roomates date rape drugs with Ginko. Loser.

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The perverted elf on "The Anne Murray Christmas Special." Barenaked In America.

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The vaccuum cleaner sequence. Scary Movie.

The end of the first Jurassic Park is one of my favorite endings ever. Definitely the best of the series. It's not one of the greatest moments of all time though.

The best moment is probably when they see the Brachiasaur (sp?), the movie's first CGI dino.

No!
The greatest moment from "Jurassic Park" was the moment when the T-Rex ate the lawyer while he (the lawyer) was on the toilet doing his business. (Needless to say the toilet became full to the brim prior to the man's demise.) In fact, Sam Neill is quoted to have said that that moment was one of the funniest film moments he had ever seen.

Um, sorry to spoil the moment for you, but the lawyer was hiding in, and not using the facility. You might have assumed that because of Ian Malcolm's line "When you gotta go, you gotta go!" as Generro ran in there. Generro has his shorts on when he gets eaten.

Still, messy clothes, eh?

The bean eating/camp-fire scene in Blazing Saddles has my vote.

"Resistance is futile!" - Data, Star Trek VIII

The ending to the original Planet of the Apes. I won't say what it is because you need to see it to believe it.

Okay, couple of spoilers coming up, so avert your eyes if necessary...
The Usual Suspects: Kujan takes a casual glance at the noticeboard, and discovers that Kint has just pulled the ultimate filmic sleight-of-hand.

Se7en: John Doe walks into the police station and gives himself up.

Memento: Natalie goads Leonard into hitting her by insulting his dead wife, and then goes outside, waits for him to forget it, and comes back in, saying it was someone else.Actually, take the whole film as one of the greatest moments of all time, because it really truly is one of the best films I've ever seen.

The Abyss: Pseudopod. 'Nuff said.....

So many more, but none spring to mind right now.
But they will........

I just watched "Monty Python and the Holy Grail" again and I'll have to go with one of my favorite moments of all time is the rabbit attack.

Moe accidently giving himself a Hitler mustache (What was this one called? It took place in "moronica")

The final revelation of who his American handler is and what her plan is in "The Manchurian Candidate"

I loved it in the Quiet Man when John Wayne threw the money in the steam engine's firebox just before the big fight started. My wife and I love this movie.
Marcus of Queensbury rules everyone!

That's Marquis of Queensbury. Lolar.

I'm deadly serious. And don't call me Shirley!

P.S. Which John Wayne movie was "I ain't gonna hit ya! I ain't gonna hit ya! The h*ll I'm not!"???

McLintock. We discussed this on the "Movie Tonight", M*A*S*H board, Scott.

I'd like to nominate the singing of The Marseilles in Casablanca as a "great moment".

Thanks, Benn... My memory fails me in my old age

Sorry about that Marcus is my son's name while maquis is something else. Brain slip.

"Here's a stick to beat the love-ly lady." - My favorite line from "The Quiet Man" Also, the vague threats from the IRA guys and how the catholic minister closes his collar as the Protestant bigwig drives past with the local protestant minister Star Trek reference to The Quiet Man.... in the novel adaptation of "The Way of the Warrior", O'Brian is described as "putting on his best Quiet Man attitude" before going to ask the Klingons what they are up to.

Gary Cooper throwing down the badge into the dirt at the end of High Noon.

Judy Garland opening the door after the cyclone and the scenery turning from monochrome to color
in The Wizard Of Oz.

The farewell scene in Casablanca.

John Wayne as Rooster Cogburn making that charge in True Grit with both barrels blazing and his teeth holding the reigns.

The first scene of Patton.

Marcellus touching the Cross when Jesus utters his final prayer in The Robe.

The scene where Burt Lancaster gets whipped by
Walter Matthau in The Kentuckian.

Judy Garland singing Somewhere Over The Rainbow in the Wizard Of Oz.

Darth Vader finally revealing himself to be Luke's father in The Empire Strikes Back.

While watching a 1990s nostalgia show last night, I heard one woman describing when she first went to see "The Usual Suspects".

*Spoiler ahead*

She travelled to the cinema on the underground. As she emerged from the station she was confronted by a large poster advertising the film she was about to see.

On which someone had drawn a large arrow pointing to Kevin Spacey with the words "He did it!"

I won't comment on what sort of person would do that, other than to suggest that they are an utter one...

"She's in the attic!"

Bugs Bunny and Mickey Mouse skydiving together. - "Who Framed Roger Rabbit"

Harold Lloyd plays football - "The Freshman"

The climactic chariot chase - "A Funny Thing Happened on the Way to the Forum"

The ending of "Life of Brian"

Harold Lloyd speeds through 1928 New York City - "Speedy"

Harold Lloyd visits 1928 Coney Island - "Speedy"

Here's my favorites:

The McManus brothers finding out who Il Duce really is near the end of "The Boondock Saints." Brought a tear to my eye.

Sarah Connor's nightmare in Terminator 2.

Jean Reno's gift to Gary Oldman ("From... Mathilda...") at the end of "The Professional."

Bruce Willis being chased by a very angry Ving Rhames in "Pulp Fiction."

Christopher Walken explaining the history of the watch in "Pulp Fiction."

Spock's funeral in "The Wrath of Khan."

The two Delta Force soldiers going in alone to save the pilot in "Black Hawk Down."

The destruction of the Enterprise in "Star Trek III".

Roy's death in Bladerunner.
"All those .. moments will be lost in time, like tears in rain."

Add a few tears of my own (while trying very hard to ignore the bird flying off into the clear blue sky)

I think it's amusing that list only goes up to 1993 ... ten years' worth of movies have come out since then!!

Patton - When the 3rd Army goes to Bastogne, and Patton declares "If we are not victorious, let no man come back live!"

The Right Stuff - When Yeager takes his plane to the edge of space.

Fellowship of the Ring - When Gandalf lights his staff to reveal the hall of Dwarrowdelf to the Fellowship.

Fellowship of the Ring - When Boromir refuses to be a good boy and die.

Return of the Jedi - When Luke rushes Vader.

Excalibur - When Arthur talks to Guinevere for the last time.

The Empire Strikes Back - When Yoda lifts Luke's fighter from the water.

Braveheart - When the English cavalry rides at the Scots at Stirling.

Babylon 5: In the Beginning - When Mollari tells how the Humans fought on in the face of doom.

Another one from The Empire Strikes Back: I always remember the exchange between Luke and Yoda.
Luke: "I'm not afraid."
Yoda (ominously): "You will be. You will be."
Still a chilling and memorable moment.

Sophie: I agree with your comments about The Usual Suspects poster vandal. Talk about ruining a great movie moment! (On the other hand, "a 1990's nostalgia show"? Has it been that long? Man, I'm getting old!)
As for Blade Runner, I was so moved by that final speech, the blue sky didn't bother me (though I did notice it).

The "Janet," "Dr. Scott," "Janet," "Brad," "Rocky" sequence in The Rocky Horror Picture Show

Ugh!

These are the scenes most memorable to me:

Mary rushing to comfort the fallen Jesus in "The Passion of the Christ"

Dorothy meets the Scarecrow in "The Wizard of Oz"

"You were named after the dog?" in Indiana Jones and the Last Crusade

Marion Crane's first sighting of the Bates Motel sign in "Pyscho"

The coming of the Angel of Death in "The Ten Commandments"

Jack Lemmon dancing with a rose in his mouth in "Some Like it Hot"

The hatching of the baby raptor in "Jurassic Park"

The boulder chasing Indiana Jones.

When the graves are shown being covered by the caretaker in "The Others"

When the women realize the shower pours water instead of gas in "Schindler's List"

The chase through the Irish parade in "The Fugitive"

The girl climbing out of the tv in "The Ring"

Elwood introduing Harvey to the society matrons in "Harvey"

Little Dutch girl speaks with Santa in "Miracle on 34th Street"

Chrissie gets eaten by Bruce in "Jaws"

"Get your hands off of me, you **** dirty ape!" -Charleton Heston in Planet of the Apes

Sam singing "As Time Goes By" in "Casablanca"

Charlie Chaplin in a chicken suit in "The Gold Rush"

Felix Unger's nasal noises in "The Odd Couple"

The crows gather on the playground in "The Birds"

And of course, every single scene in the best movie ever made- "Gone With the Wind"

"Get your hands off of me, you **** dirty ape!" -Charleton Heston in Planet of the Apes

should be "Get your stinkin' paws off me, you **** dirty ape"

I definitely second the suggestion of the Marseillaise scene in Casablanca. Powerful and poignant both in fiction and in real life, since many of the extras in that scene were refugees from Europe, and had real tears in their eyes while participating in the symbolic fight against tyranny.

Bad Santa- the end credits rolling. It's brilliant, because that's the cue for me to leave.....

Ditto for "Star Trek: Nemesis"

Another classic moment is from the 1953 version of "War of the Worlds" when the machines rise out of the pit and hover over the ground. The battle that follows after is great as well.