Beastie Buddie Biz Markie, rotund rapper (''Just a Friend''), guests on ''The Biz vs. the Nuge,'' from Check Your Head (1992).
MIKE D Biz is dope. Once he actually gets to the studio he'll do hours and hours of material, but it takes many attempts to actually get him to the studio.
AD-ROCK And you gotta find him a candy store. He likes candy -- all kinds.
Beastie Buddie Q-Tip, from boho rap group A Tribe Called Quest, guests on ''Get It Together,'' from ''Ill Communication'' (1994).
MCA He'd just come by our studio to hang out and play basketball.
MIKE D He heard the track, thought it was nice, and then freestyled his verse real quick. Just like that.
Beastie Buddie Lee Perry, legendary reggae producer, guests on ''Dr. Lee, PhD,'' from ''Hello Nasty'' (1998).
MIKE D He's really on a different plane, but he was able to come down a bit and record a vocal for us, which was nice of him.
Beastie Buddie Spike Jonze, acclaimed video and movie director (''Adaptation'', ''Being John Malkovich''), helmed such hits as ''Sabotage'' and ''Sure Shot.''
MCA When we first started working together [on the video for ''Time for Livin','' from 1992's ''Check Your Head''], he was a photographer. He's got a good creative sense and good sense of humor.
MIKE D Spike is good with his hands -- and with weapons.
Beastie Buddie Rick Rubin, producer and cofounder of the Def Jam record label, collaborated on ''Licensed to Ill.''
AD-ROCK Did we work with him?
MIKE D It's weird, because we used to be good friends. And then we weren't.
AD-ROCK And that happens...
MIKE D ...and we had a lot of fun hanging out making that record.
AD-ROCK I guess he didn't.