The Highest Form of Flattery
MoveOn.org has clearly embraced the forwarded and embedded online video as a way to motivate the support of Democratic voters. This is an interesting case, however, in which the organization promoted both the pro-Obama original and the anti-McCain parody.
Update: This isn't the only parody, of course. Trebor Scholz found this one. There's another No You Can't video that came out almost immediately from Barely Political