I kind of hope Clint was trying to bootleg a bit of bipartisan criticism into his speech at Romneyfest (on Afghanistan and Guantanamo), rather than just being an 82 year old man addressing an empty chair while making throat slitting gestures. Still, I see promise in the format and look forward to the Democrats featuring Barbara Streisand shouting at a bus stop or Oprah cackling to herself while poisoning next door's kittens or or Michael Martin Sheen not being quite sure why he's standing in the front garden after having definitively forgotten to put his trousers on, or Oliver Stone wandering the streets trying to identify the one person not responsible for assassinating Kennedy.
I believe it was Charlton Heston who pioneered this encroaching senility approach to celebrity endorsement. Was it really the case that he once addressed an audience of gun owners as 'my fellow Armenians' while fondling a Dushki? Sadly no: I just made that up.