NBA Plus/Minus Stat

I just noticed tonight while looking at the box score for the Spurs/Suns game that ESPN has a player's plus/minus for the game.

So, for example, Matt Barnes was an amazing +20 for the game. That means during the 34 minutes he played, the Suns outscored the Spurs by 20.

For the Spurs, Bruce Bowen was the player with the best plus/minus for the game, +12.

I think the NBA should give out an end of year trophy for the player with the best total plus/minus for the season.