Even though some sites have blasted Eminem's latest effort, it's still selling like goddamn hotcakes. He's also hitting the late night show circuit pretty hard after appearing earlier this week on Letterman with Jay-Z to perform a number of tracks, including "Not Afraid." This time around, though, Em took to the Late Night with Jimmy Fallon stage last night to tackle "Won't Back Down," sans Pink. And while the Detroit MC sounds pretty solid live, there are of course numerous moments of either self-censorship or beeped-out profanity. There's not much of a narrative going on in this track, anyway, so you don't really miss out on anything, especially considering it's the Roots' live interpretation of the beat that's most interesting.