Just remember, you've gotta get up and walk around in between movies to keep blood circulating in your butt and legs.
I got
Alien Nation on DVD the other day. (the original movie, before the TV series) I know it's not exactly OLD old, but it is 20 years old. I never got into the series but I like that movie.
Also in the 20-year-old category, I got
Masters of the Universe on DVD recently.