And not always by the players. In one MNF game at Chicago's Soldier Field, a field-goal kick went over the catching net and a fan jumped from the stands caught the ball in flight and landed cleanly on his feet.
And was allowed to return to his seat.
The special Friday game on Christmas Eve in 2004 was not only a hotly-contested rivalry, but the winner of the game would claim the NFC North title. Kudos to the NFL for scheduling a Christmas Eve game even on a non-traditional football day, and to the Packers and Vikings for competing for the division title all year long.