Before Dancing With the Stars, Mario Lopez was still best known for playing the character Slater on the 80s sitcom Saved By the Bell. Now thanks to his impressive run on Dancing With the Stars -- and a much-talked-about romance with his dance partner Karina Smirnoff -- Mario is popular again. He is now the host of MTV's hit shows America's Next Dance Crew and Top Pop Group. He was also promoted from correspondent to host of the entertainment news show Extra.