Wizarding World of Harry Potter. I was at IOA a few days ago, and was very excited as I'm a huge HP fan (love the books, disappointed with the movies). I ran there first thing, only to find the area filled to capacity, and a 90 minute wait to get tickets to be able to come back hours later. So I figured that I would come back later when it was less crowded. In the afternoon, I was able to get a ticket, however it was good 5 hours after I had to leave. And the alternative was waiting 150 minutes just to get into the area, then battle presumably enormous lines for Dragon Challenge and Forbidden Journey. So I was unable to go. I think if Universal is going to spend millions on their biggest investment since park opening and advertise it everywhere, they should have designed it so that more people could actually get in. And since the area has 3 of the park's 5 coasters and I was too tall for Pteranodon Flyers, the only coaster that I rode was Hulk (which was awesome). Anyway that was my only disappointment, as 2010 was a great year for me coaster-wise.