I had set my sights so low for Reign of Fire that when the movie turned out merely OK, I was pleased. It's very post-apocalyptic, the acting is passable even when the characters aren't deep. And as long as you don't ask about the logic flaws (of which there are a-plenty) and enjoy the pretty dragons, you'll like this film. (Plus, before it we got a trailer for Shanghai Knights which looks possibly better than the original. Victorian London!
We rented Spy Kids as the sequel is coming out, and the trailers look vaguely fun (and a big homage to Jason and the Argonauts and some other classics.) The original is fun itself, nothing deep, just a kids movie. However, best roles ever for Danny Trejo and Tony Shaloub, and Alan Cumming is perfect as a kids' show host.