1. Purple Rain
Music by: Prince & The Revolution
Song: "Purple Rain"
2. Super Fly
3. Pulp Fiction
Dick Dale, Al Green, Dusty Springfield, et. al.
"Pumpkin & Honey Bunny/Misirlou" by Dick Dale & The Del-Tones
4. O Brother Where Art Thou?
The Soggy Bottom Boys, Alison Krauss, John Hartford, et. al.
"I Am A Man Of Constant Sorrow" by The Soggy Bottom Boys
5. The Big Lebowski
Bob Dylan, Captain Beefheart, Gipsy Kings, et. al.
"The Man In Me" by Bob Dylan
6. Repo Man
Iggy Pop, The Circle Jerks, The Plugz, et. al.
"Repo Man" by Iggy Pop
7. Reservoir Dogs
Stealers Wheel, Joe Tex, George Baker, et. al.
"Stuck In The Middle With You" by Stealers Wheel
8. Easy Rider
Steppenwolf, Roger McGuinn, The Holy Modal Rounders, et. al.
"The Pusher" by Steppenwolf
Mick Jagger, Ry Cooder, Jack Nitzsche, et. al.
"Memo From Turner" by Mick Jagger
10. A Clockwork Orange
11. The Royal Tennenbaums
Nico, Mark Mothersbaugh, Paul Simon, et. al.
"These Days" by Nico
12. Aguirre: The Wrath Of God
13. Lost In Translation
Kevin Shields, Phoenix, The Jesus & Mary Chain, et. al.
"City Girl" by Kevin Shields
14. Morvern Callar
Holger Czukay/Can, Aphex Twin, The Velvet Underground, et. al.
"Cool In The Pool" by Holger Czukay
15. Paris, Texas
"Paris, Texas" (It's a cover, but a good one)
Shirley Bassey and John Barry
"Goldfinger" by Shirley Bassey
17. Bottle Rocket
The Proclaimers, Rene Touzet, Mark Mothersbaugh, et. al.
"Over And Done With" by The Proclaimers
Scott Jolin, Geechie Wiley, Joseph Lamb, et. al.
"Wall Street Rag" by Scott Joplin (another cover, but another good one)
Popol Vuh, Caruso, Verdi, et. al.
"Wehe Khorazin" by Popol Vuh
20. Napoleon Dynamite
When In Rome, John Swihart, Jamiroquai, et. al.
"The Promise" by When In Rome
That's what I think. It's interesting how most of these soundtracks are more memorable than the films themselves.