Game winning assist in OT when I almost died during the game (slashed in the throat) during a playoff game. We didn't go on to win, but that was enough for me. My first shift back since the beginning of the second period, I checked a guy trying to skate it out of the defensive end, from my knees, I hit a perfect pass to our star player speeding up ice, and he walked in for an easy breakaway goal.
Either that, or when I played goalie, teams weren't set for goalies and they randomly assigned a goalie to a team for a half (was 2 periods, we were kids) and it was worst team vs best team and the worst placed team hadnt won a game all year. I shut out the 1st place team and the last place team went on to win the game.