Motion Picture Scripts Database

For those of you who live in the L.A. area, check this out:

Motion Picture Scripts Database

An Inventory of the Motion Picture Script Holdings of Six Los Angeles-Area Libraries

This database details the film script holdings of six Los Angeles area collections: the Academy of Motion Picture Arts and Sciences, the American Film Institute, the Frances Howard Goldwyn Hollywood Regional Library, the University of California, Los Angeles, the University of Southern California, and the Writers Guild of America, West.

Yes, it seems like you can find any screenplay you want online, however that's not true: Many scripts, particularly older ones, are still only available as hard copies. These L.A.-based libraries are a great resource for reading hard-to-find screenplays.