If you're a fan of classic movies, then www.openculture.com/freemoviesonline is the site for you. They host an impressive list of links to comedies, dramas, Hitchcock, noir, horror, thriller, martial arts, westerns, documentaries, silent, and animated films.
So go to their site, scroll down through the list, find a movie you like, and look for the word Free in blue letters. I like the film Nosferatu (1922), one of the earliest known version of Dracula. It's silent and in black and white.
When I click on it, I get taken to the Open Culture page but the actual video is hosted on Youtube. If I click on the word Youtube in the lower right-hand corner of the video, I'll be taken directly to the Youtube page hosting the video.
So if you are interested in classic movies, check it out.