Show: South Park
Year: 2007
Cameo role: Denver Broncos quarterback

It takes a hell of a guy to agree to voice a cartoon character of himself on a show (during an episode that centers around Guitar Hero, of all things) in which he’s the butt of a quick, brutal joke. “You kind of suck, but my dad says you might be good one day,” Stan Marsh tells the then-quarterback of the Denver Broncos. When asked about it, he said he thought it was funny, which only makes the whole thing even better.

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