If you're currently asking yourself, "Who the heck is Scott Baio?," we won't blame you, as he's been on the outskirts of fame of late. His big break came in the late '70s at the tender age of 16 when he was cast on Happy Days as The Fonz's cousin, Chachi.
In 1982, Scott then landed in the Happy Days spin-off Joanie Loves Chachi, which lasted a mere 17 episodes. Apparently, America did not love the show. After that, he starred on the popular '80s sitcom Charles in Charge.
Since then, Scott has had a bit of a career resurgence of late, thanks to the VH1 reality show, Scott Baio is 45...and Single. He now stars in the Nickelodeon comedy, See Dad Run, and also played lawyer Bob Loblaw on the cult comedy series Arrested Development.
As for Andy's favorite guest? He says noncommittally while answering the viewer tweets, "Too many favorites! Every night I realize, oh my god, that person — my new favorite!" Way to be diplomatic, Andy.