http://en.wikipedia.org/wiki/Scott_Baio

Or is wikepedia inaccurate yet again? That shocked me...even though Mario is not an actor at all, but just played a small part in CIC as an instructor. He seem like a really cool guy to meet, though.

I don't know how reliable that website is...because first of all, Scott only has one brother, Steven, and a sister, Stephanie. In fact, they're twins. I don't know who the "Frank Baio" is but he's not Scott's brother. Stephanie wasn't even listed in the bio.