Brydge is a combination keyboard and case for iPad that when attached, converts the tablet into a laptop (video). It is made of machined aluminum and attaches to the iPad with a special quick release hinge. Brydge is by Los Angeles-based designer Brad Leong, Sam, & Eddy. They are raising funds for the project on Kickstarter.
Brydge, Keyboard Attachment That Converts iPad into Laptop