The Beastie Boys are a popular music band consisting of musicians and rappers Adam Yauch, Ad-Rock and Mike D who made guest appearances on Futurama. In the episode "Hell Is Other Robots", they sing part of the Robot Hell song. During this song, their heads are outside jars, so it is assumed Robot Hell contains some sort of extraordinary life support. Bender, Fry, and Leela go to see the Beastie Boys in the year 3000 and meet them backstage and Fry says that he had their five albums in 1999, to which they reply, "we have seven albums now".