I do! I was in Austin several years back when we beat Nebraska for the first time in the Big 12 championship. The campus just went crazy - people honking horns shouting. I remember reading that there was a mini-riot on Guadalupe (The Drag) and the police had to be called in.
There was bedlam at the University Co-Op trying to buy national championship t-shirts and caps. They had saleswoman standing on tables and shouting shirt sizes to the mob when each new load came off the truck. People would raise their hands and the women would fling a shirt at them (sort of like Vince does). News crews were there too.
I got an official t-shirt like the ones the players wore last night after the game and decided I should not wait around long enough to get one that had the final score on it. Now that I have something to show off at the office, I'll take my time with the extra merchandizing.
BTW, expect ABC to come out with a DVD game replay in about four weeks. They did this with last year's Rose Bowl and it sold quite well.