The best movie I ever seen was the “Rock’n’Rolla” by Guy Ritchie. It’s a mind-blowing mix of criminal action and comedy. Even “Snatch”, “Lock, stock and two smoking barrels” nor “Big Lebowski” can’t top it.
If you want a slower movie, I’d go with “Fargo” (the movie or the TV series both are good), the new “Blade Runner” or “Drive”.