NFL Marquee Matchups for 2007

There are always games within the games in the NFL, and often they're one-on-one matchups. But only rarely are we treated to a full-fledged confrontation between a premier offensive player and a premier defensive player, each as good as anybody in the league at his position and each looking to prove something at the expense of the other. Football reputations are made in moments like these. The 2007 NFL calendar provides but a handful of such showdowns. Here are eight that promise to be great.