Bowl games

Unlike most other sports—collegiate or professional—the Football Bowl Subdivision, formerly known as Division I-A college football, does not employ a playoff system to determine a champion. Instead, it has a series of "bowl games." The annual national champion is determined by a vote of sports writers and other non-players. This system has been challenged but little headway has been made given the entrenched vested economic interests in the various bowls.
A bowl game is a post-season college football game, typically in the Division I Bowl Subdivision. The first bowl game was the 1902 Rose Bowl, played between Michigan and Stanford; Michigan won 49-0. It ended when Stanford requested and Michigan agreed to end it with 8 minutes on the clock. That game was so lopsided that the game was not played annually until 1916, when the Tournament of Roses decided to reattempt the postseason game. The term "bowl" originates from the shape of the Rose Bowl stadium in Pasadena, California, which was built in 1923 and looked like a bowl. This is where the name came in to use, as it became known as the Rose Bowl Game. Other games came along and used the term "bowl", whether the stadium was shaped like a bowl or not.
At the Division I FBS level, teams must earn the right to be bowl eligible by winning at least 6 games during the season. They are then invited to a bowl game based on their conference ranking and the tie-ins that the conference has to each bowl game. For the 2009 season, there were 34 bowl games, so 68 of the 120 Division I FBS teams were invited to play at a bowl. These games are played from mid-December to early January and most of the later bowl games are typically considered more prestigious.
After the Bowl Championship Series, additional all-star bowl games round out the post-season schedule through the beginning of February.