It's kind of awesome that some of Saturday Night Live's best moments come with the most unlikely guest hosts. Fine example: cult actor Christopher Walken, who rocketed into all-time best lists with this bizarre sketch. As producer Bruce Dickinson, he repeatedly interrupts hard rock legends Blue Oyster Cult as they record their greatest hit, "Don't Fear The Reaper," with requests for "more cowbell." Couple it with a classic Will Ferrell performance (he also wrote the sketch) and we're sold.
