MU 061 Resources
Internet Movie Archive at archive.orgA great source for all kinds of public-domain movies.
Also one of the truly essential on the internet. It hosts the WayBack Machine, which is not just neat-o but an important tool for holding people and institutions accountable.
Not all files on the Internet Movie Archive are in formats easily handled by some media players (including QuickTime, which works within Logic when you link your project to a movie file). If you want to do a little legwork to be able to convert these other files to formats QuickTime can read, this is the site for you.