During a game, he's usually spot on in his analysis of what is happening on the field. That is the primary job of an analyst and he does it very well. It's also why he has moved from ESPN's third or fourth announcing team to one of its top two. Even the dolts at ESPN recognize a good football analyst when they see one...although one could argue that with Herbstreit on their top crew, that might nullify what I just wrote.
In any case, I think he does a great job of breaking down games while they are in progress.
As for his radio show...meh. I've only listened a couple times and was unimpressed.