Big Sleep, The (1946)
Based on the Raymond Chandler novel, with a screenplay partially written by Faulkner, this flick pretty much sets the standard for classic Noir movies. Which is to say, a lot of it will seem totally cliche because it's been done so many times since.
The script is phenomenol, if you like smart-alec-y one-liners and comebacks. Bogart taught Bond how to be Bond.