Christopher Knight

No matter what he does, Knight will forever be known as Peter, the middle brother on The Brady Bunch. A child actor who starred in commercials before landing his signature small-screen gig, he appeared in a handful of series — and numerous Brady spin-offs, TV-movies and variety shows — before more or less abandoning showbiz in the '80s in favor of a career in computers. His decision to appear on the "celebreality" series The Surreal Life in 2005 rejuvenated his professional and personal life. Not only was the surprisingly well-built bachelor thrust back into the spotlight, he found love with housemate Adrianne Curry and the couple soon earned their own reality spin-off, My Fair Brady.