Spirit of the Game
Spirit of the Game (often abbreviated SOTG) is something for which Ultimate is particularly well known. The following description is from the official Ultimate rules established by the Ultimate Players Association:
Ultimate has traditionally relied upon a spirit of sportsmanship which places the responsibility for fair play on the player. Highly competitive play is encouraged, but never at the expense of the bond of mutual respect between players, adherence to the agreed upon rules of the game, or the basic joy of play. Protection of these vital elements serves to eliminate adverse conduct from the Ultimate field. Such actions as taunting of opposing players, dangerous aggression, intentional fouling, or other 'win-at-all-costs' behavior are contrary to the spirit of the game and must be avoided by all players.
Many tournaments give awards for the most spirited team, as voted for by all the teams taking part in the tournament. This honor, sometimes called the Spirit Award, is highly regarded.
At some levels of competition, it is still customary for teams to cheer their opponent at the end of the game. This tradition is an example of how the spirit of Ultimate differs from most other sports, as these cheers are meant to be ridiculous, fun, and amusing. Cheers are often creative, and can take the form of a short game involving both teams (very often involving a disc), or possibly a song. Cheers are known as calls in the UK. Cheers are less common at the higher levels of play, although attitudes towards this custom vary between countries and organizations.
 External Links
The Huddle has a fantastic issue dedicated to some luminaries' thoughts on SOTG.