I love watching movies over again. We have a laaaaaaarge DVD collection... all our friends know where to get their movies from!
I find I get distracted easily and I like to be doing something like drawing or knitting and having a movie on that I've seen before is nice because it doesn't matter if I tune out for a while.
We rarely go to the theatre for movies, it's a special treat... I think I might have to see 'Dark Knight Rises' again though, on IMAX.
I sometimes get bouts of pretty severe insomnia and so I have a couple old favourites - Princess Bride, Disney's Robin Hood (you know, the one where Robin Hood is a fox and Little John is a bear), The Sword in the Stone - that will help me relax and at least get some rest, even if I can't fall asleep.