Van Gundy and Jackson are great together. Both very knowledgeable, not afraid to step on each other's toes, and very funny. Mike Breen has become a disappointment. He is actually a very funny guy, used to do sports on Imus a few years ago before he went national, but he seems full of cliches doing these broadcasts.
Walt Frazier was a great player, but he is mediocre (putting it kikdly) as a TV commentator ("he swishes, he dishes..."). Marv and Jackson for the Nets was much better.
I think the guys missed two things, though: 1. The Celtics' starters were exhausted by the 4th quarter, no wonder they fell apart. 2. Rondo is only a second year player, and should be given a little more slack. They are pretty brutal when he screws up.