I've come to think that Jensen maybe shy as himself, but put him on stage or in front of a camera playing in someone else, he comes alive! Many (vastly different types of) characters on screen notwithstanding, look at him in theater (AFGM), as the lead singer of "The Impala", or even the impromptu auctioneer at ChicagoCon09, I think he would be a superly funny host for SNL.