ESPN and ABC do a good job with their NBA coverage, but there is nothing quite like the NBA on NBC. From 1990-2002 they had the exclusive over the air rights to the sport, and there was nothing like it. They had the greatest theme song of all time, good announcers and just handled the sport professionally.
NBC is in dire straights right now and I think a lot of that can be tied to them losing NBA basketball coverage. If they can get this back and come up with one good breakout sitcom, they can turn things around quickly.