1. Singin' in the Rain
2. Casablanca
3. Memento
4. Duck Soup
5. Oceans 11 (original)
6. The Great Escape
7. Sixteen Candles
8. Fight Club
9. Cool Hand Luke
10.Indiana Jones (trilogy.. i couldn't decide on one)
Honorable Mentions not ordered : Pirates of the Caribbean; Almost Famous; Gone With the Wind; The Good, The Bad, The Ugly; Gladiator; Silence of the Lamb; Yankee Doodle Dandy; Star Wars (all); Dirty Dozen; Once Upon A Time in the West; Pulp Fiction; Edward Scissorhands
Ant, I'm surprised you didn't mention Almost Famous..