Joe Rogan
It really is astonishing to see a guy thoroughly fun to watch on NewsRadio, across most of his standup routines, and even early-on in his podcasts go from left-leaning, sympathetic, and genuinely curious person about all kinds of things, all the way to a naked sellout, whose usual defense of being a right-wing asshat is to proclaim "I'm just asking questions!"
On a parallel note, I understand that Kentucky's Mitch M. went from left-wing politico earlier in his career to essentially Darth Vader in the last few decades. Which is why I'd think it would be both fascinating, horrifying and hugely revealing to learn just how that happened, in as much detail as possible...