$$ and exposure are two reasons that quickly come to mind. Additionally, playing a top 25 FBS team gets the fan base excited. I'm hoping for more of a 42-20 ballgame.
GO SIOUX!!!
I have three cousins who are Tech grads. Their dad (aka vlarson on this board) is a UND grad. He is taking them all to the game. Hopefully he makes them all cheer for the Sioux for the price of admission.