Condileezza Wicket was my pick as the best.

My daughter has three as well.

I got her to rock back in forth for a while so that I never saw her "back". I thought it was a trick too, but I got to a point where I could control her by watching her shadow (and unless there are bursts of her rocking instead of spinning every 30 seconds or so, its not a trick). I was counter clockwise by the way, which is wierd because I always test the other way.

"MY GOD! It's full of dog!"