Watch Free Movies - Legitimate

http://www.hulu.com/movies  ---Only in the US.
http://www.popcornflix.com/
http://www.viewster.com/
http://www.openculture.com/freemoviesonline -- classics
http://www.crackle.com/
http://www.hitbliss.com/ - It's also a downloadable app
http://www.freemoviescinema.com/

Public Domain Torrents

http://www.publicdomaintorrents.info/index.html

http://freebies.about.com/od/computerfreebies/tp/free-movies-online.htm