From the June 26 program, after Maher asked why Stone, who did films on JFK, Nixon and Bush, had not done a movie on Reagan:
OLIVER STONE: Nixon always said Reagan was a dumb son of a bitch and, you know, I think that he was [audience applause]. And I think, I really think George W is dumber [more audience laughter and applause].

BILL MAHER: Definitely

STONE: I do think that by doing the W movie I kind of put all my efforts behind dumbness and I don't want to go back there because, you know, I'm not the Farrelly brothers. But I do think Nixon is the father of Reagan and I think Reagan's the father of Bush. There's sort of a very strong line....