Been on the Millennium Force at Cedar Point in Ohio. Wicked ride, pretty good park.
Busch Gardens in Williamsburg continues to be one of my favorite parks perhaps just because I went there so many times growing up. Alpengeist and Apollos Charriot are some pretty solid coasters there.
I've been to 2 or 3 6 Flags. While I don't enjoy those parks as much as some of the others they've got their share of great rides too.
The best coaster at Adventure Island is the Incredible Hulk. The best ride there and one of the most fun rides I've ever been on is the Spiderman ride. It's a combination of a roller coaster, hydraulic chair, 3D movie. It's just done really well and is very entertaining.
I haven't been to regular Universal Studios since I was like 5 years old but I've heard they've got some sweet rides there now as well.