Greatest Movie Screenplays

Source : Writers Guild of America

1. Casablanca
2. The Godfather
3. Chinatown
4. Citizen Kane
5. All About Eve
6. Annie Hall
7. Sunser Boulevard
8. Network
9. Some Like it Hot
10.Godfather 2
11.Butch Cassidy and the Sundance Kid
12.Dr Strangelove
13.The Graduate
14.Lawrence of Arabia
15.The Apartment
16.Pulp Fiction
17.Tootsie
18.On the Waterfront
19.To kill a Mockingbird
20.Its a Wonderful Life
21.North by Northwest
22.Shawshank Redemption
23.Gone with the Wind
24.Eternal Sunshine of the Spotless Mind
25.The Wizard of Oz

Link for the Rest of the list : Greatest Screenplays