I found this on ESPN last year and have really come to like this stat quite a bit. It basically takes into account how the 3 pt shot impacts your shooting%, here is the def:
: Adjusted Field Goal Percentage = [(PTS - FTM)/FGA]/2
AFG% measures shooting efficiency by taking into account the total points a player produces through his field goal attempts. The intention of this adjustment is largely to evaluate the impact of three-point shooting. For example, if Shaquille O'Neal has 3-5 FG, all two-point shots for 6 points, then his AFG% = [(6/5)]/2 = .600. Meanwhile, if Ray Allen is 2-5 FG, but his 2 FGM are both three-pointers for 6 points, then his AFG% = [(6/5)]/2 = .600
here are the lakers leaders:
Sasha .589 (Miller leads all guards at .599)
It gives a real measure of how effective a shooter a player is
thought this might interest some of you guys.