Answers

1 - Pretty Woman
2 - Robin Hood: Prince of Thieves (not the tights one)
3 - Karate Kid 2 (note it was the 2nd one... where they go to Japan)
4 - Ghost
5 - Top Gun
6 - Top Gun (top 5 soundtrack of all time?)
7 - Mission Impossible 2 (or "MI2" for the in-crowd)
8 - Terminator 2 (although for some reason I associate the entire Use Your Illusion 1 and 2 with this movie)
9 - So I Married an Axe Murderer
10 - Shreck
11 - The Breakfast Club
12 - Back to the Future
13 - Beverly Hills Cop 2
14 - Rocky
15 - Batman Forever (U2 song was better but not as well known among non-U2 freaks such as myself)
16 - Mad Max Beyond Thunderdome (two men enter, one man leaves)
17 - 48 Hours (think of Eddie Murphy on the bus with headphones.... the only rendition of the song I can listen to)
18 - Romeo and Juliet
19 - Saturday Night Fever
20 - Beavis and Butthead Movie
21 - Footloose (duh!)

How'd ya do?