The guy is an absoluet genius and one of the comedy GOATS.. I agree that many of this films weren't all that great, but he didn't write most of them.

I saw his Blue Grass band in 2012 and not only is he an amazing muscian as well, but he had some great off the cuff jokes during the entire show.

And other comedians, many of them GOATS themselves, have a very high opinion of him.