4. The Rock, 2000
Today he's better known as Dwayne Johnson, world's most bankable movie star, but it's easy to forget that a mere 16 years ago, he was simply "The Rock," and it could be argued that his hosting gig on SNL helped catapult him to mainstream success. He got an assist from fellow early aughts WWE stars (including Mick Foley, Big Show and Triple H), but the Rock's appearance gave us glimmers of the charismatic actor he would later become. Working alongside recurring SNL characters like Chris Kattan's Mr. Peepers and Tim Meadows' Ladies Man, he turned in a performance worthy of a championship belt, and he'd be rewarded for his efforts by being asked back to host three more times.