Popcornflix is another great place to watch free movies online. Their constant stream of new titles from Screen Media Ventures (the same company that runs Crackle) means a lot of movies are being added to them all the time.
The site contains hundreds of movies, including comedy, drama, horror, action, romance, family, documentaries and foreign movies. They also showcase key features of the web and film school and list some titles by a common theme, such as police and robbers and sci-fi sanctuaries.
The Leaving Popcornflix section helps you watch movies that are about to leave the site.
No account required; Just choose any movie and enjoy. It supports resume playback, so you can watch these movies in part if you want.
Recent additions include Kingdom of War 1 and 2, Detour and Headhunters.