Question I was surprised no one on my team besides me knew the answer to: "What punk band had members named Klaus Floride, D.H. Peligroso, and East Bay Ray"? (table next to us guessed "Fugazi").
Tiebreaker question that won us the game: How many wives did Brigham Young have?
I thought the answer was 26 or 28 and settled on 26: turns out the answer the quizmaster had is 27*. As the other team guessed a paltry "11", we won. If I hadn't seen the indie ex-mormon sci-fi film "Plan 10 from Outer space" I'd have probably not known that Brig had over 20 wives (this is important to the plot of the film). I've seen Brig's grave in SLC and remembered (perhaps wrongly?) that he's got more than one wife buried next to him. So my spotty Gentile knowledge of LDS helped win us money, which we spent on beer. I thought that was appropriate, somehow.
*There is some dispute about the exact number due to the difficulty of defining "wife", since traditional marriage certificates don't generally exist for polygamists. Wikipedia entry on BY lists over 50 wives.