NBC found its must-see TV last night, thanks to an intense four-minute appearance from a shock-tricked hip hop troupe of teenagers from Los Angeles. Honors to Tyler, The Creator and Hodgy Beats, with the help of Questlove (in black hoodie for necessary, bonus hardness) and Mos Def's Kool Aid swilled "SWAAAG"s delivered straight into camera at the performance's end, for ...