"By gad sir, you're a chap worth knowing! HA! HA!"
TMF and Casablanca are awesome. If you liked them you should also try The Big Sleep, which is another Bogart, this time based on Chandler rather than Hammett, and definitely must watch The Third Man, which is by Graham Greene, directed by Carol Reed, stars Orson Welles and Joseph Cotton, and is, all-round, awesome.