I know a lot of people who claim to make a lot of money on NBA totals, and have always heard that it is one of the most beatable things in sports betting. For some reason, when I actually track their plays, they don't win, with the exception of a few who are very selective (Occam comes to mind in the NBA forum). I guess I'm a jinx since when I look at the totals, they lose. On the other hand, I do know people who beat the sides year in and year out.
Good Luck,
Bart