I love me some Clyde Frazier. Keeps it hilarious with his rhyming style ("swishin' and dishin' in transition" "postin' and toastin'" etc.) but also focuses on the important parts of the game like defense, even though his team isn't particularly well known for their work in that aspect of the game. Also, he notices and calls out guys for fundamentals like traveling and lets you know when someone is screwing up, whether its a player, coach, or ref.
Having been a championship point guard he knows how good teams play, etc. I just love him.