Calculating "adjusted plus-minus" is a fairly complicated business that tries to factor in the strength of all your teammates and opponents on the court, then center it such that the average NBA player has an adjusted +/- of 0.
Fairly short description here:
http://espn.go.com/blog/truehoop/pos...ted-plus-minus
Much longer descriptions here:
http://www.82games.com/barzilai2.htm
http://www.82games.com/comm30.htm
You can see some real-time data here:
http://basketballvalue.com/index.php
More complete and potentially more useful data is often posted on 82games.com after half-seasons and full seasons.
Since this has somewhat turned into a statistical thread, what are your favorite single player stats, out of pure curiosity?
Also, I think in general Matt Bonner's spacing of the court on the offensive end has a lot to do with team functionality and flow in general, though like I said, I didn't get to watch tonight's game in any continuous manner, so I can understand if that factor didn't really play much into tonight's stats.