I've mentioned a quote from it multiple times on st/tt.
I just thought to look again and I found a good chunk of the interview; and the quote is towards the end, starting around 7:00 - "anything 15 million people like can't be all that good." (re: critics, and I'd say some non-pros, too.)
I've thought about that and some other things from the interview since I first saw it.. in 1992?! it's from costas' "later" show which used to run in the carson daly slot. I really enjoyed it and missed it when it went away.