I like the references to '06 Notre Dame and '03 Auburn. Extremely different situations though.
In '06, the lead-up to ND was summer-long and the game was super-hyped. This led to what amounted to a weekend-long atmosphere of craziness. In a related story, I may have broken the record for most hyphens in a paragraph.
In '03, we were coming off a pretty bad road loss to BYU in the opener (a game which I watched on the stadium Jumbotron). Expectations were low, but as another poster said, starting from the first snap (Ball to Curry), the buzz in the stadium began to rise. Then it became a "Oh my God, is this really going to happen?" Then it became "let's tear these m-fers down!"
Also, good call on '99 FSU (@ FSU). I was threatened with death repeatedly on the walk to the stadium (wearing my #14 jersey). What a great game......only road game I've ever been to where I was offered compliments by the opposing fans.