They should have been doing this a long time ago. Hell, the only reason there even doing this right now is because of that gambling scandal.

NBA refs can use instant replay to review fights, some flagrant fouls
NEW YORK -- NBA referees will be able to use instant replay to review altercations and some flagrant fouls starting this season.
The NBA Board of Governors voted last week to approve the changes recommended by the league's Competition Committee.
Officials will be allowed to use replay on the more severe type of flagrant foul, known as the penalty 2. Because a flagrant-2 results in an ejection, the committee ruled that reviewing such infractions was appropriate.
Referees also will be able to use replay after an altercation to ensure that no punches or other unsportsmanlike actions are missed in determining penalties.
NEW YORK -- NBA referees will be able to use instant replay to review altercations and some flagrant fouls starting this season.
The NBA Board of Governors voted last week to approve the changes recommended by the league's Competition Committee.
Officials will be allowed to use replay on the more severe type of flagrant foul, known as the penalty 2. Because a flagrant-2 results in an ejection, the committee ruled that reviewing such infractions was appropriate.
Referees also will be able to use replay after an altercation to ensure that no punches or other unsportsmanlike actions are missed in determining penalties.