You may also want to check out YouTube as they have a lot of old movies and some old TV shows.
The main problem with YouTube (actually two) you really have to search without knowing what is available, and 2) you may find something in one search and it is taken down later.
Having said that, I have found a lot of interesting stuff on YouTube to watch.
I haven't watched a movie on YouTube for quite a while because although the one and only one I watched was a regular length film, I had to watch "Part 1" and then "Part 2" etc. Is that still the case or will one click on the video show the whole film?