Wow... tough question.
OK... nothing from the past couple of years or from the B&W era:
Comedy (a tie between these 3):
Snatch ... Burn After Reading ... Intolerable Cruelty
How to lose a Guy in 10 days
Thomas Crown Affair (classic with Steve McQueen & the remake with Pierce Brosnan)
Pride&Prejudice (Keira Knightley)