Looks pretty cool. I've been using a scroll-mouse at work and have been missing one at home. Fifty buks is a littl steep though. I'll wait a while before buying any apple product, they tend to slash prices after a products been out or a bit.

well, I bought one of these a few months ago.
I'm completely frustrated with it. It works fine for a while, then the tiny track ball gets grit trapped beneath it causing it to stop scrolling in one direction. I'm constantly cleaning it and tipping it upside-down to get the small parcticles out from beneath the ball to make it function again.
Also, they made another major design error. They kept the proportions the same as their one button mouse. This simply does not work for a two button design because it is so bulbous that it is difficult for the fingers to line up with the left and right sides. I am continuosly clicking about trying to get my fingers in the right place. The side buttons are akward and useless. Overall thumbs down. This is the very first apple product that I have disliked. It needs a bigger ball and a more streamlined lower profile to function properly. My $19 logitech mouse works better.