While researching I stumbled across this: full length movies on the web, and at a reputable site as well. It's true: Scifi's drive-in, a subset of their main scifi.com site, has a bunch of old movies for your viewing pleasure. When I first clicked in, I thought it might be select scenes, or the first 10 minutes and then you have to pay for the rest or it would just tell you to watch SciFi on TV.
Those are the full movies, all there for your enjoyment. Some are B-grade movies, which are pretty good in their own right (if you're in the right mood and actually like that genre) but some are outright classics. I'm talking about movies like Metropolis and 20 Thousand Leagues Under the Sea to name just two. Unbelievably good and a sure-fire time suck if you're ever at a loss for something to do and your PC is just sitting there starting at you.