On The Tonight Show around 1988.
http://www.youtube.com/watch?v=PR_hh8ong_k
As a bonus, he cracked me up in this too:
http://www.wimp.com/biffquestions/
Did you know Biff plays the tuba?
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Did you know Biff plays the tuba?
"The conductor of an orchestra doesn't make a sound. He depends for his power on his ability to make other people powerful." - Benjamin Zander