I'll submit the picks in no particular order...vote "other" if there's one not listed and expand on your choice via the comments section.
I don't mean to slight the 80's with only 2 games, there's 8 playoff wins in that decade, I remember being at several of them, but none strike me as "memorable." Maybe that's what time does to your memory. The 80's had plenty of memorable losses, but let's not focus on that.
Vote below....and let's chat it up in the comments section. Give your vote some thought, I know the Genoa game was great and there's plenty to be said about that game being the greatest win...but review all the games on the list and try not to let the "newness" of the Genoa win cloud your judgement. There's some really special and great games on that list.
Have fun...and you can select multiple answers if you just can't settle on one game....but try to pick no more than 2.
Note: The game against Youngstown Rayen was in 1985, not in 1986. Typo on my part, and can't be fixed since it's a poll.