The last time Jimmy Fallon brought out his <a href="http://www.uproxx.com/tv/2009/11/well-played-jimmy-fallon-2">impeccable Neil Young impression</a>, he was <a href="http://www.uproxx.com/tv/2010/11/neil-young-springsteen-do-whip-my-hair-harrison-ford-was-really-high">joined on stage by Bruce Springsteen</a> for a somber version of "Whip My Hair.