Graeme Hughes is the greatest commentator of all time with Rabs as a distant 2nd. Everyone else is average to awful.
Being in NZ, I only have to sit through the Channel 9 team during Origin and Grand Finals these days. It's amazing how far they've regressed when I do hear them after a sustained break. When will they learn that great players don't automatically equal great commentators? Cam Smith and Joey are just f**king awful. Joey panics after players get a hang nail, and will start claiming that they're "gone for the night/day", then most times they recover and play on. The only time I've seen him get it right is Origin 1 with the Walsh KO.