It's Harbaugh vs. Harbaugh, Ray Lewis' final game no matter what, Joe Flacco's shot at the ultimate contract-negotiating pitch and the first appearance by a read-option and "Pistol" offense in Super Bowl history.
You know all about those storylines by now. And you'll be hit over the head with them for the next two weeks. But there's much more to Super Bowl XLVII in New Orleans on Feb. 3 than just those angles. There are Xs and Os factors, as well as other interesting elements of the game, that should be explored, beginning now.
So here you have them, 10 things you need to know about the San Francisco 49ers vs. the Baltimore Ravens in the NFL's biggest game.