Man, you must have gotten a little mixed up there. In these given transcripts, there's no direct reference to Ari ranking any particular comedian as top 20 underrated. We did talk about Dave Attell potentially being one of the most underappreciated comedians, but that was my view, not Ari's. That dude Attell is wild though, very influential in the New York scene, and his jokes resonate with a lot of aspiring comedians. But anyway, I'd suggest checking out some other episodes of the show, maybe Ari discussed his underrated list in another conversation.