The Aluminum Keyboard Buddy Case for the iPad 2 is a keyboard shaped to the iPad 2 with keyboard slightly smaller that standard. Magnets put the screen to sleep when it is protecting the iPad 2, and is rechargeable via USB. With the protective cover installed, the iPad 2 could be mistaken for the smaller 11-inch Macbook Air. This essentially turns your iPad 2 into a "fixed-angle" laptop.
This case is available for $50 via the MIC Gadget Store