Biggest college football rivalry
The common consensus here in Alabama is that the Iron Bowl is the most heated intrastate rivalry in the nation. Case in point: It's common that when you meet a new person here you ask them 3 questions: Republican or Democrat, What church do you go to, and are you Auburn or Alabama? I can tell you that we do live it 365 here and there have even been shootings over the Iron Bowl. It has even been a source of divorce in this state for years.
I would like some points of view on other in-state rivalries. Meaning not Ohio St-Mi, or Texas-Ok. Sorry, I just don't think that those are quite the same as living in a state with two major CFB teams that truly hate each other. I know that I was definately pulling for Oregon cause I did not want to see Auburn win. :D