Allison Janney: American Beauty and Nurse Betty.
Richard Schiff: Living Out Loud, The Practice (mentlaly ill homeless man who was the only witness to a murder), NYPD Blue (romanian immigrant who Sipowicz beats the out of in a most staisfying way. ).
Bradley Whitford: The best episode of ER, EVER, Love's Labor Lost. I've seen that episode about six times now (three on NBC, one on TNT, one on the Season 1 DVD, and again on the DVD but w/ commentary), and it makes me cry every single time.
John Spencer: The Negotiator, the debut episode of Law & order way back when, The Rock.
Martin Sheen: Apocalypse Now, The Kennedys, Babylon 5: River of Souls (well, I'm in the minority on that but who cares?).
Joshua Malina: Sports Night.
Rob Lowe: Wayne's World, The Lyon's Den.
Don't forget John Spencer on LA Law!!!!
Don't forget Martin Sheen in The American President.
Scott: Never watched L.A. Law.
Hannah: Actually, uh, well I haven't seen that moive all the way through. I've seen bits and pieces, on TBS. *sheepish grin*
Allison Janey did an episode of Law and Order where she was a witness that had to testify to put away some Russian mobsters.
It was the season 4 finale called "Old friends". Ben Stone assures her that she will be protected and she does testify, but is killed in the end. This causes Stone to resign at the end of the episode, opening the position for Jack McCoy to take over the next season.
I remember that one, Ed!
Richard Schiff was also in hte movie Deep Impact, he played the girl's father, and he was beardless.
Brad Whitford was the main Alpha Beta fraternity bad guy in Revenge of the Nerds II: Nerds in Paradise
He was also Elizabeth Shue's sleazy cheating boyfriend in "Adventures in Babysitting".
Allison Janney is also in some teeny movies: 10 Things I Hate About You, some Mandy Moore movie, etc.
I believe that I saw Richard Schiff in Jurassic Park 2, but without the beard.
John Spencer in Hardball (I love the movie-Shut the h*ll up!)
Richard Schiff makes an appearance in Ray as one of Ray's managers.
Mary McCormack and Allison Janney are both in Howard Stern's movie Private Parts. Mary plays his now ex-wife.
...Wow.