The "bear" kind of sauntered at first, the finally moonwalked at the end.

cool, i liked that one

Excellent!

I can use that video in class. It will work well when we talk about letting bias affect your observations in a lab!

However, I wonder if this one works as well: once you are aware, you don't fall for it. So who knows if it works... I don't think it will.. height differences and there is black on the costume

http://www.youtube.com/watch?v=bioyh7Gnskg&feature=related

It is still tough to accurately count the passes and watch what the bear is doing at the same time. It seems more like a flash arcade gaming technique test than anything else