I'm digging the Spurs commentating on NBAtv.
They seem knowledgeable about their players AND the other team. Fans boo-ing the refs, and the guy talks about how the Spurs should be taking better care of the ball instead of caring about the refs. I thought they were hosed on the charge call against Hill (from Gasol) and they admitted it was close and how that's the toughest call to make in basketball.
One of the most unbias local commentating I have ever heard. Must get annoying for their own fans