How about when the guy claimed to have an over unity motor? So he has a magic motor that puts out more power than you put in, but instead of being on the cover of every media outlet on earth and rolling in dough he is shilling his crappy blog and twenty year old videos on George's show.
I love the way he strung together non sense full of technical sounding terms and George uh uhs and mmmmmms approvingly. Quack Scientist->"Those mainstream scientist didn't even have their frenulator aligned with the geographical rheostat!"
George->"But what can you do in a case like that?"
Quack Scientist->"You have to put the tensional diolator into the modulus of the Fourier transform!"
George->"mmmmmm of course, the old tensial diolator, uh uh."