Good news is the quick answer is almost everything. I am a coaster nut, but I too don't do the Hulk or DD that often, maybe 1 time a trip, due to the fact that they are a little too G-forcy for me.
My favorite rides, which are easy on the body are: Spiderman, Jurassic Park River Adventure, Poisiedens Fury (show) all at IOA, (however, the IOA park is beautifully themed and you may want to spend alot of time just exploring) at the main universal park, the Mummy, Men In Black, Twister (tornado simulator show), jaws, ET, Terminator, and there is a new coaster there Rip Ride Rocket, that you may check out, I have not had a chance to ride it yet, mixed results, some say its very smooth, some say not so much.