I nominate Taki Inoue to be the official jester of Formula 1. Sure, his driving might not have been the best, but for a comedian he'll be one of the fastest.
Lauda joined McLaren way post Accident though (82 IIRC), but I suppose they saw it as a bit macabre to hack one ear off. Emmo makes me laugh everytime I see the picture
For those not on Twitter, Fernando Alonso has been posting pictures of himself with some of his old cars. Apparently there's an exhibition happening in Spain.