Year: 1990

Lights, please. Two years after the Bruins and Oilers had to replay Game 4 of the Stanley Cup Finals, the two teams met up at the ultimate stage again in 1990. And guess what happened? That's right, the power went out...again. Luckily, the game wasn't cancelled this time around, but it did result in a 25-minute delay. Both teams probably appreciated a breather at that point, though. The game was already in overtime, and would end being the longest contest in Cup Finals in history.