I'm from Michigan, cursed by the Lions.
My favorite moment goes back to November 15, 1981. The 4-6 Lions hosting the 8-2 Cowboys. Somehow, the Lions stay in the game. With a few minutes left, they tie, get the ball back, and go charging down the field. With 20 seconds to go and no time outs, they run Eddie Murray, the placekicker, onto the field for a 47 yard field goal (that's a long kick in American football). The Cowboys charge the line, but the kick is up--and good! With no time left, it's a huge upset. Cheering and shouting, wild celebration.
Then the TV announcer says--"hey look at this..." A shot of the screen reveals that the Lions had 15 men on the field when the ball was snapped, but none of the referees noticed. So no penalty was called...Lions win.