USC-UCLA is a great college football rivalry, but I think it's not as big as Ohio State-Michigan. The unique thing about USC-UCLA is that it is a rivalry between two schools that are in the same city.

I put Army-Navy because I think that the game transcends sports. When you watch the players singing their respective alma maters after the game, many of them in tears, it's something special. Especially when you realize that all of the seniors have played their last game and the next thing they'll be doing is serving our country.