3. Alfonso Ribeiro
If people were excited about the prospect of seeing Saved By The Bell's Screech on this year's Celebrity Big Brother, imagine the buzz of seeing The Fresh Prince Of Bel-Air's Carlton Banks! Carlton was one of the show's most popular characters, but Alfonso Ribeiro's career hasn't gone on to be anywhere near as successful as titular star Will Smith's. He remains a truly legendary figure, however - largely thanks to that dance (you know the one), his dress sense and love of Tom Jones. Ribeiro is currently the host of spelling bee gameshow "Spell-Mageddon" over in the United States but, much like a lot of the other ventures he's committed to since Fresh Prince, it isn't proving to be very popular. However, he'd be very welcome on Celebrity Big Brother and would likely be the favourite to win it from the day he entered.