I'm a big fan of the often much maligned channel 9 commentary team. Bill Lawry, Michael Slater, Mark Taylor, Mark Nicholas and even James Brayshaw nail the big moments and bring a lot of passion.
As you can see here, they make it an event and very exciting to watch.
Some of them aren't that bad on the big moments, but the rest of the time they are mostly truly awful. And the big moments are, by definition, a very small minority of the time.