Name the match-up that is MUST SEE currently

The talk about how the Tennessee-Florida game isn't as relevant as it used to be made me think of this. I used to carve out my time to watch that game. Also, Florida State-Miami, USC-Notre Dame, etc. But with the current college football status, what are the games that you consider MUST SEE? And you can't include YOUR team. I would love to say LSU-Alabama, but I won't. So list your current favorite SEC match-up, and your current non-SEC favorite match-up. Here's mine:

Iron Bowl, Alabama-Auburn
Ohio State-Michigan