If you like to doodle or you draw professionally with your Mac, then you are most likely familiar with Wacom Drawing Tablets. Well, finally there is an untethered model. Graphire Bluetooth was just announced by Wacom yesterday. It works wirelessly with your Mac via (surprise!) bluetooth. The Graphire Bluetooth ($249USD) comes with a 6x8 inch drawing area, a wireless mouse and wireless pen, and a universal power adapter to recharge the Lithium Polymer battery which is supposed to last for "up to 25 hours between charges." As an added bonus, you can use the tablet with Apple's Inkwell technology to handwrite notes on your Mac.
As a sometimes sketch artist, I want one of these, but I'd prefer a larger sized model (and a smaller price tag).