I have to say this is one of the most innovative and original, if not potentially groundbreaking, UI paradigms I have seen in some time. Not quite at the level of iPhone multi=touch, but close.
"And I thought they smelled bad... on the outside."
UPDATE: Turns out this was an April Fool's joke from ThinkGeek. However, the response was so overwhelming that they are going to try to make it a real product. Story here. Backstory here.