That's a tough one. The one game that always stands out for me and I remember more than any other is the 1990 NFC Championship Game. Nevermind the fact that we beat the 49ers on their own turf, but the game was SO well played by both sides.
I remember that Leonard Marshall hit like it was yesterday. And especially when Summerall said, "The diangnosis on Montana is.....EVERYTHING HURTS!"