Round 1: Match 5
Monty Python and the Holy Grail

For my money, the funniest movie ever made. And one of the most quotable. "It's just a flesh wound!" "What's the air-speed velocity of an unladen swallow?" "Your mother was a hamster, and your father smelt of ELDERBERRIES!" There's comedies, then there's this.
VS
American Psycho

Yeah, it's witty, well directed, has a unique sort of atmosphere, but the real story here is the star making performance by pre-Batman, pre-Equilibrium Christian Bale. He completely dissappears into the role like few actors of the modern era can do. Very good movie punctuated by a great performance.