At the top are the nationally recognized games. Ohio State-Michigan, Alabama-Auburn, Army-Navy, USC-ND. Then there are tons of regional rivalries that are also really good. Clemson-SCar, Ole Miss-Miss State, Oklahoma State-OU. Then, there are great series that should be played every year even though it is not the schools' top rival. Such as Georgia-Auburn, or back in the day, Arkansas-Texas. And I'd throw Miami-VT into that category. ALL of these games should be preserved.