Thumbs up to Shrek 2. Lauri and I have seen it twice so far, and she's not one to see a movie in a theatre more than once. As good as the first one.
Thumbs up to Spider-Man 2 also. It's that rare sequel that's actually better than the original. I wouldn't recommend it for really little kids, but there's nothing in it that's harsher than the first movie -- some language, no nudity, superhero fantasy type action scenes, and (believe it or not) great story and characterization for a summer action movie.
Haven't seen King Arthur yet, but I might try this weekend.