The greatest rivalry in college sports, IMO. You just can't beat sectarian hatred. Closest thing college football has to this:
(Best part about this video, btw, is that it's from an obviously not ethnically Scottish Rangers fan called Abdul, who apparently has a series of YouTube videos of himself waving a British flag with a picture of HRHQEII in the middle of it in the face of anti-Union Celtic fans, thus managing to be simultaneously sectarian/clannish
and multiethnic/cosmopolitan. This is post-modernity. Also, #@&! Celtic.)