Random Aside: Everyone knows that the NHL is extremely conservative when it comes to rule changes. When it comes to safety issues, death or extreme injury is required to make common sense changes. When it comes to dumb rules, something embarrassing has to happen in a big spot. Ahem.
Someone among you might have wondered what happened to make the NHL finally adopt video review? The answer: Game 1 of the above CGY/EDM series. Joe Nieuwendyk's tying goal was disallowed because it hit the padding inside the post and then came out quickly. Although you can't really tell on the footage above, the puck did indeed cross the goal line. The front page of the Calgary papers the next day had a close up shot of the puck clearly across the goal line with "ROBBED" in 3-inch font.
So video review was introduced in the 91/92 season. A few Detroit and Minnesota fans on the boards might be old enough to remember its first important test case: