The Long Goodbye and The Big Lebowski
The Big Lebowski obviously paid homage to the works of Chandler, but I only recently watch The Long Goodbye and it seems like Lebowski really takes a lot from Goodbye.
The beginning when he goes shopping for cat food in the middle of the night
The Gangster who says it's Shabbas and he shouldn't be out
The interaction between the cops and Marlowe when he gats back from dopping off Lennox, particularly the way the cop looks at his bronze baby shoe
I'm sure there are more, these are all I can think of off the top of my head.
I hate to advocate drugs, alcohol, or violence to anyone, but they've always worked for me.