Who else's brain hurts? I can't think in time very well. Excellent concept. It's not implemented very well, since you have to do all sorts of wacky things to get one thing to work, but it's fun nonetheless. As everybody else is saying, it needs music. Even Katamari D. would be better than... silence. Good game, though.
A great game. While the card challenge was easy to get (I got to over 2000 before I died), the gameplay is nice. The physics and music both match the play style, and definitely combine with all of the other elements very well. Not a game I could see myself playing for long periods of time, but it is one of those 5-minute-break kind of games. Kudos!