Buddy's stupid reaction faces
I don't know why, but I'm hooked on the show. I only watch to see Buddy react when some conspiracist uses ridiculous logic to explain their theory. Buddy always has that terribly-acted look of shock and disbelief on his face that conveys, "holy *beep* This proves everything, the nut we found who made up lies to support our flawed premise totally validates us against the nay-Sayers!"
Imagine if he was your professor? Could you ever accept his grades when he has zero credibility? He must bring so much prestige to his university's department!