In the LA Times today there was an article about a film festival and Billy Wilder's "Double Indemnity" would be showing.
They said it: Great lines from noir films - latimes.com Here's an exchange written by Wilder and Raymond Chandler, based on James M. Cain's novel:
Walter: You'll be there too?
Phyllis: I guess so, I usually am.
Walter: Same chair, same perfume, same anklet?
Phyllis: I wonder if you know what I mean.
Walter: I wonder if you wonder.