No idea who Stamos and Mandell are, i guess I missed whatever they are famous for, they look like actors so could be I didn't watch wahtever they were in.
My other "answers" were, that one from alien slayer, movie maker ( thought burns was woody allen.. ) and that actor that is in funny movies..
Howie Mandel was a stand up comic who is probably best known as the host of Deal or No Deal.
What a dumb self-ascribed 'nickname'
And what about Michail Gorbatschow... this should be also accepted