Snowball on TV

You might be familiar with Snowball, the medium sulphur-crested cockatoo who's made a name for himself as a bit of a dancer. Now it seems he's become a bit of a TV celebrity in America, putting in an appearance on the The Late Show with David Letterman. 
It's worth watching just to see him do a little poo at the end -- the bird that is, not Letterman!