In this brief clip from Andy Warhol’s public access TV show from the early 1980s, Andy Warhol’s TV, Warhol sits silently by while Richard Berlin assumes the duties of interviewing Frank Zappa. Zappa discusses the ins and outs of being a public gadfly; for a few moments we glimpse a few seconds of the video for “You Are What You Is,” which had been banned from MTV for its use of a racial slur but also, just as plausibly, because of the way it poked fun at Ronald Reagan.

The interview made a significant impression on Warhol. Here’s the entry from The Andy Warhol Diaries for June 26, 1983:
 

Frank Zappa came to be interviewed for our TV show and I think that after the interview I hated Zappa even more than when it started. I remember when he was so mean to us when the Mothers of Invention played with the Velvet Underground— I think both at the Trip, in L.A., and at the Fillmore in San Francisco. I hated him then and I still don’t like him. And he was awfully strange about Moon. I said how great she was, and he said, “Listen, I created her. I invented her.” Like, “She’s nothing, it’s all me.” And I mean, if it were my daughter I would be saying, “Gee, she’s so smart,” but he’s taking all the credit. It was peculiar.

 
Warhol’s memory was rather good—the Mothers did indeed open for the Velvets at the Trip on May 3, 1966. In late May 1966, both bands played the Fillmore in S.F. for a three-day stint.