What: Taking a cue from the track pads on its laptops, Apple has produced a multi-touch mouse that can distinguish how many fingers are on its surface and the direction they're moving. For example, one finger moving down the top of the mouse scrolls down an on-screen page (this eliminates the scroll wheel). But if two fingers swipe lightly to the left or right while using Firefox or Safari, the browser pages flip backward or forward. This takes some getting used to, but eventually it gets to be very handy. Gamers, however, have complained it doesn't include some of the functionality they crave.
-- David Colker