Over 99K in attendance at the spring game, LOL. Most teams only dream of getting that many people to show up at a game. Perfect "storm" for it: coming off national championship, picture perfect weather, rough winter (so people are really wanting out of the house), and cheap tickets.
BTW, it's reasons like this why Ohio State will always - all things being equal - get the nod over most other teams when it comes to being selected for the playoff. Ohio State = massive interest, massive cache, and massive money.