Last night's episode of The Tonight Show With Jimmy Fallon was, all things considered, pretty remarkable: for one, Fallon got to do his famed Neil Young impression with ol' Shakey sitting right next to him—and (and!) when guest Ellen DeGeneres took the stage, the Roots broke into a very faithful, effective, and TV-appropriate cover of Lil B's immortal "Ellen DeGeneres." Ellen danced and loved it, because Ellen loves dancing. Also, Ellen said one of her favorite Neil Young songs is "The Needle and the Damage Done"—that's a really dark choice, Ellen! He has, like, a thousand songs! Anyway: watch the episode above—the Roots throw it down at the 18-minute mark.