Before 9/11, Dennis Miller was a superior smart-ass who thought he was a super-genius, sneering at anyone to the right of Karl Marx.
John Stewart is a similar pseudo-intellectual, class-baiting with similarly pretentious rambling that makes him appear intelligent to those who aren't. and using Marxist rhetoric to insult ring-wing Republicans. But at least Miller learned on 9/11 that this type of thinking was to blame for American vulnerability-- though he never apologized for it, at least he stopped.
Stewart, not so much.... fools never learn.