I had garageband from Thursday on my iPad, but the very first thing I BOUGHT was iMovie. I'm thrilled to have it and just need to get my butt in gear to use it.
Technically the first thing I put on my iPad was Angry Birds and Plants Vs Zombies, as I wanted to re-download previously owned apps for the drive home. Thank you super duper fast Apple store WiFi!
I'm on the fence about Real Racing 2. And I had Infinity Blade from my 1st gen iPad, but haven't checked it out yet.
It will be interesting what the first 3rd party iPad 2 app will be. I wonder if they'll be able to do anything within the next little while or if we'll have to wait a month.