Mario Lopez is sizzling on ABC's Dancing with the Stars. He claimed recently that he has had no formal dance experience other than break dancing with his buddies when he was a child. Come on, who's he kidding? Although Mario Lopez never sang, he was a background dancer on Kids Incorporated with Fergie and Martika for the longest time, and he also used to dance on Saved by the Bell. YouTube has a plethora of old Kids Incoroporated clips you can find Mario dancing in, but the funniest one I found was this one (from a recent Jimmy Kimmel broadcast) where he's a dancing pirate.
In this next one, Mario dances as "A.C. Slater" on Saved by the Bell
No formal dance experience, eh? This guy seems to have been dancing since he was in his mother's womb.