I can tell you that I have more of an interest in college football overall than I do in the NFL now. While there's still big money involved and "powerhouse" conference teams schedule a few cupcake games a year (which mightily benefit the smaller school and in many cases keeps their football programs in the black) it still feels like a more pure version of the same game that's being played in the NFL. I especially prefer the replay rules in college to the crap system in the NFL.
I'm an LSU and Tulane fan. (Yes, that is possible.) I make a point to watch their games whenever possible but can also find myself completely absorbed in a game between Wyoming Cowboy State vs. Mid-South Alabama A&M if it's a good game.