Where He Was Then: A cast member of Nickelodeon's sketch show “All That,” Nick then hosted “The Nick Cannon Show.”
Where He Is Now: Hosting America's Got Talent, and a morning radio show, releasing several studio albums, running his own record label, acting as chairmen of the network Teen Nick, and starring in (and directing) movies. Whew. Nick actually does all of it. Oh, and he's married to Mariah Carey. You might have heard of her?