I remember them all, and attended many. For my money, it's the '92 NC. To hold that Miami team to a single offensive score was just unbelievable.
We sat in the corner of the end zone under the overhang of the mezzanine, and the noise was so loud that I had to shout into my wife's ear just to be heard.
Best sign was on the back of a car coming home the next day: "31-13, and we STILL haven't played anybody!"