There can be only one:
Pulp Fiction
Most of us have played that CD until it burned up or we eventually got tired of them, but still...
All the songs - perfectly matched for the movie. Almost seems like Tarantino picked songs AND wrote the stories simultaneously -"counting flowers on the wall, that don't bother me at all" - and it made for an awesome blend.
Watch it again. You'll be amazed at the great dialogue, camera work, everything.
It may be one of the best movies ever.
Quite interesting.
YIP
Zack
PS Sometimes people ask me which is the greatest porn movie ever...
I think "Rocco Siffredi: Animal Trainer 2" has a solid case for that title.