The better an actor the host was, the sicker Belushi would be. He would be hours late and at death’s door, and he would come in in a robe, unable to speak. He’d have doctors in his dressing room. And the host would be thinking, “Belushi isn’t even going to show up, he’s too sick even to work”—and then John would come out on the show and just blast them away. He would sucker-punch guys that didn’t see it coming. And the more actorish they were, the worse they got it.More here.