Absolutely 100% would endorse the Jurassic Park portion of Universals Island of Adventure. I could have spent all day there alone, simply incredibly modeled after the movie all around, the atmosphere there was friggin awesome.
I've heard a lot about the Harry Potter area as well, wasn't finished when I was there last
The backlot tour is always fun, no its not the most amazing, but it's still cool. Shrek 4D was fun, and good for the family. ET is always a favorite of mine though, assuming your kids know who/what ET is, thats a great one.