I've seen this ad many times and thought it was cool. I always think more stop-motion animation is a good thing. However, i forgot to mention I recently found out how it was made. While at Espresso, there were always lots of animation magazines lying around and one them had an article about the ad in it. I had always assumed they had used computers to superimpose the stop motion onto the live action. WRONG. Every single bunny in that ad was animated pose by pose, which means they made thousands of models and animated them in the streets of New York. How frigging awesome is that? Even the giant bunny is replacement animation.
More info here:
http://www.creativereview.co.uk/crblog/we-made-the-play-doh-bunnies-bounce/
More info here:
http://www.creativereview.co.uk/crblog/we-made-the-play-doh-bunnies-bounce/