If you're a football fan, Sunday is kind of like Christmas.
Two conference championship games will determine the teams that advance to the Super Bowl, and the matchups couldn't be more exciting: Denver vs. New England (Peyton Manning vs. Tom Brady). And some would say the other game, pitting San Francisco against Seattle, might just feature the two best teams in the league.
America shows its love for the sport in many ways beyond breathless anticipation of big games. It also gives back to the National Football League with tax breaks and publicly funded stadiums.