Now that NBC no longer has Sunday Night Football, its top-rated series, it has to fill the Sunday time slot with something. Tonight, it begins with a two-hour special presenting a compilation of some of Late Night host Jimmy Fallon’s best bits – a month before he takes over as the new host of The Tonight Show. One highlight that better be included: Fallon (as Neil Young) and Bruce Springsteen (as a younger version of himself) doing a cover of  Willow Smith’s “Whip My Hair.”