This witty Humphrey Bogart film came fairly late in his career. Beat the Devil is available on DVD and can be viewed online here at the Internet Archive, here at LikeTelevision.com, or here courtesy of GoogleVideo:
It also stars Gina Lollobrigida as Bogart's wife in her first American film and, of course, Peter Lorre. We've always gotten a big kick out of this movie. It's directed by John Huston.
This film is on Roger Ebert's list of great movies. The New York Times calls it "a pointedly roguish and conversational spoof," but doesn't like it.
7/18/2008: 1001 Flicks has a review.