From CSI: Las Vegas, episode "Justice is Served":
(Note:I'm only sure about the last three or four lines.)

Coroner:As for what killed him...
Grissom:It was a mountain lion, right?
Coroner:No, I believe it was a large dog, perhaps a boxer or a great dane.
Grissom: Okay, I was wrong about the species.
(Nick and Warrick give him one of those looks)
Grissom:What?
Nick:Well, it's just that we've never heard you admit to being wrong before.
Grissom:I'm wrong all the time! It's how I get to "right".