For me, it would have been the mid-80's tie game with Bama at LSU.

As I recall, Bama went in to the half up 7-0. the halftime went extra long due to some movie filming and the LSU fans were antsy. However, they came out and scored two quick TDs to go up 14-7 and Tiger stadium was ROCKING. The GEAUX - TIGERS chants across the field was epic.

Bama finally quieted things down temporarily with a late drive and score with a halfback pass to Mike Shula for a TD late in the 4th. But LSU got the ball back and was ripping off yardage and marched down the field. Tiger stadium was loud again, but LSU's field goal kicker came in an absolutely shanked the equivalent of an extra point try and missed it.

Bama got the ball back with a second or so left in the game, on the 20 yard line. Instead of trying a Hail Mary, Perkins had Shula take a knee and the game ended up tied. NOBODY left the stadium happy. Not a single person. On either side.

I learned some new curse words that night. But there for a bit early in the second half after those two LSU scores, I don't think I have ever heard a louder stadium.

Addendum: The loudest game I attended at Bryant Denny was the 2005 Florida game. I find it odd that I personally don't think I have ever heard a louder crowd in the Saban years, but it's true.