I have heard of him and watched some of his stand up. I'm not a huge fan of comedians that use instruments and songs, but he is actually funny at times. He did a tour with Mitch Hedberg, whom I adored, but I did not get the chance to go see them. Then, of course, Mitch died.
And I can't say I have a favourite of Lynch's. I have not listened to all of his stuff (perhaps one day, though, maybe), nor would I really consider myself a fan--I would just say he's funny sometimes, but not really my cup of tea.