Man that list can go on and on. Maryland vs Virginia or Duke are some other big ones.
What makes the Michigan/Ohio St rivalry so great is that not only is it a border war, but more significantly it's the implications that game has held historically. The Iron Bowl is a great in-state rivalry, but very rarely has it had any sort of impact on the national title picture.
bo vs woody was probably the most heated time in the rivalry, but always makes or breaks a season, the nerves i get from ohio state vs michigan games is unbelievable
very deep rivalry though from what i've watched, and a couple of years ago it did, when auburn had newton