Jeff Goldblum and Biz Markie gave U.S. TV audiences a late night laugh on Thursday (11Nov10), with an impromptu duet of the rapper's comedic hip-hop song JUST A FRIEND.
The Fly actor appeared as an interviewee on Late Night with Jimmy Fallon, while the hip-hop star was a guest performer with house band The Roots.
And Goldblum rose to the challenge when comedian Fallon suddenly asked him to show off his piano skills for a surprise track with Markie on vocals.
Goldblum said: "If it's OK with Biz Markie. It would be a great honour for me if it was OK with you."
The actor then took the stage, tinkling the ivories while delivering lounge vocals to the 1989 tune, sending the studio audience into an uproar.
And the crowd went wild when Markie stepped up to the mic, adding his famous wails to his hit track.