Open Culture (“the best free cultural & educational media on the web”) has links to 550 films that are available free online in one place or another. The list is divided into the following categories:
- Comedy & Drama
- Film Noir
- Horror & Hitchcock
- Westerns & John Wayne
- Silent Films; Documentaries
I’ve glanced through the whole list and its pretty interesting. The animation list includes a Disney anti-Nazi propaganda film (Der Fuehrer’s Face), Fantasmagorie (first fully animated film), Luxo, Jr. (one of Pixar’s first animated film, a short), Red Hot Riding Hood (a Tex Avery classic), Steamboat Willy (the film that put Disney on the map), Max Fleischer’s Superman, The Rime of the Ancient Mariner (the Dore illustrations plus Orson Welles), Winsor McCay’s astonishing The Sinking of the Lusatania, and of course Sita Sings the Blues.
The page also lists a raft of online sources of free films.