Justin Timberlake in the Emmy-winning ''D--- in a Box'' video. Will Ferrell as a one-note percussionist in the classic ''More Cowbell'' sketch. Eddie Murphy as Buckwheat. Here are ''Saturday Night Live'''s Greatest Hits
JOHN BELUSHI AS JOE COCKER (1976)
Was John Belushi's scary-but-dead-on impression of Joe Cocker singing ''With a Little Help From My Friends,'' complete with spastic, jerky movements and howling vocals, a lampoon or an homage? Thirty years later, the jury is still out, but Belushi gets bonus points for nerve, since he did it on an episode where Cocker himself was the musical guest.