Back to the Future, yeah I love that series. Just pure entertainment.
Independence Day, another I've got on disk and watch periodically. Like the comedic, send-up stuff in it, but it's also inspirational.
Men in Black, another fun one, although I really was disappointed by the sequel.
Total Recall, also have that one, really enjoy it, but it's lousy dialogue, the plot falls apart at a touch, and the three or four page PKD story on which it's based blows it away.
Running Man, also fun, like RoboCop, a bit of a poking of fun at a lot of things.
Demolition Man, lots of fun, lots of gore, humorous.
Very good. Have it on DVD and watch it often.