If you want to download free movies online and do it legally then the only option you have is to download movies that fall into the public domain.
When a movie is public domain that means that the copyright isn't held by any one individual any longer and now the public owns the movies. This means you can watch and download these free movies as many times as you like completely legally.
You'll find many more movie choices if you'll consider watching free movies online instead of downloading them. The movies may not be yours to keep but you'll get to watch them often in high-quality streaming directly from the websites.
You can download free movies at Public Domain Torrents which offers classic and b-movies that can be downloaded and then played on your computer or TV.
Browse through the free movie downloads by viewing the top twenty, newest twenty, browsing the genres, or showing a list of all the movies available for download.
All the movies here can be downloaded as Divx AVI files which may supported by the video player already on your computer but if not can be played with the free DivX Plus Player. Some of the movies can also be downloaded as videos for the Playstation PSP, PDA, and iPod.
The Internet Archive is another great place to go to download free movies online. There are free movie downloads of comedies, film noir, sci-fi / horror, and foreign films.
Look on the right side of the page to view the most downloaded movies last week, most downloaded movies of all time, and the staff picks. Use the links near the top of the page to browse the free movie downloads by subject, keyword, or language.
My favorite way to find a movie to download here is to browse the sub-collections. Try going to Feature Films and then clicking on a genre to view the full-length movies you can download.
You can download these free movies in several different file formats, most of which will be supported by the video player already on your computer.
You can also download free movies at Public Domain Flicks which has free full-length feature films that all fall under public domain.
You can use the search box to find the movie you want to download, browse by newest additions, or view an alphabetized list of all the movies available.
Click on the title of the movie you want to download and then use one of the download links at the bottom of the page to download the free movie.