Here is one that hasn’t been mentioned. The 2007 UCLA game. UCLA was ranked 11, and the Utes were on nobody’s radar. My wife had bought me tickets for birthday, but I was not expecting much. We had Tommy Grady at QB, and UCLA had Ben Olson.
We just dominated them on both sides of the ball. The final score was 44-6. The excitement in the stadium was so electric, I was hooked on Utah Football. I bought season tickets for the very first time the next year (2008), which was clearly one of the best purchases I have ever made.
https://www.youtube.com/watch?v=FRR5fv0PXXQ