Universal Studios
Production Central
Jimmy Neutron: Most of the kids are familiar with the Nick characters from the ride especially the Rugrats, Dora, and SpongeBob. It is a fun 3 D simulator ride with stationary seats for younger kids. When you exit the ride, there is an interactive area where kids can send an email to friends, be the director of a cartoon, or control the sound effects of a cartoon. They can play a trivia game and, if they get enough correct answers, they win a round on an arcade game. SpongeBob also has a meet and greet in that area. You don't even have to go on the ride to enter the interactive area.
There are also plenty of characters for "Meet and Greet" in Production Central such as Dora and Jimmy Neutron as well as SpongeBob.
Shrek: Stationary seats are available for toddlers or anyone who doesn't like a little shaking but the best thing is the meet and greet with Shrek, Fiona, and (my favorite) Donkey. I can spend quite awhile just listening to Donkey interact with the kids.
Woody Woodpecker Kid Zone
Animal Actors is a fun show for kids to watch. Animals perform stunts and there is plenty of audience interaction. Just watch out for the bats
The Barney show is every little kid's favorite. After exiting Barney, there is a play area where kids can make music, splash in the water, or draw on the walls. There is also a meet and greet with Barney.
Curious George is a wet and dry play area. Kids can squirt people with water cannons or run upstairs to dump buckets of water down. There are all sorts of water interactive areas. For those who want to stay dry, there is a Ball Factory where kids can shoot and throw nerf balls and plenty of climbing for the little ones. The balls are soft and safe whether you are throwing or getting hit.
Woody's Coaster is a kiddy coaster. ET is also a fun ride for the kids. Listen for ET to say your name at the end of the ride.
Fieval's Playland has tons of interactive elements and everything is at a mouse eye's view. There is also a slide where kids can take a two person water raft down.
World Expo
Kids love standing inside the giant coca cola bottle and getting fogged. Your children maybe tall enough to ride Back to the Future and Men in Black or you could do Baby Swap. There is also a Fear Factor Live show. Some kids love watching the stunts and the drinking of "bug" juice.
Depending on your kids, they may enjoy Jaws, Earthquake, and Twister.
Height requirements at Universal:
Revenge of the Mummy- Must be at least 48"
Jimmy Neutron's Nicktoon Blast™- Must be at least 40" (persons under 40" can experience this attraction from an adjacent stationary location.)
Back To The Future The Ride® - Must be at least 40"
MEN IN BLACK™ Alien Attack™ - Must be at least 42"
Woody Woodpecker's Nuthouse Coaster® - Must be at least 36"