Apple Magic Trackpad Brings Multitouch to Macs. Costs $69
Apple today has introduced Magic Trackpad for iMacs, Mac Minis and Mac Pros which brings multitouch and gestures support for these desktop Macs. You can think of Magic Trackpad as a larger desktop version of touchpads found in MacBook Pros. You can use it for swiping, pinch-to-zoom, two-finger scrolling, finger tip rotation and so on. Since the entire Trackpad acts as a single button, you can effectively use it as a replacement to your mouse.
Design wise, Magic Trackpad has same angular design as seen on the Apple wireless keyboards, and it is connected to Macs via same medium i.e. Bluetooth.
Apple Magic Trackpad is available as of today for $69 USD. You can order one right now via Apple Store online here.
UPDATE 1: Hands-in video of Magic Trackpad can be found here.