The two compilations (http://www.imdb.com/title/tt0346952/, http://www.imdb.com/title/tt0910873/) from …er … lectures? Q&As? Shows? Ok, from shows Kevin Smith ran through some US and Canadian universities and (on the second volume) in London are entertaining ramblings by somebody who just runs a loose mouth and knows his fan community well to enough to pull their strings and press the right buttons. Neither Kevin Smith movies nor his narrations do have too much redeeming value or even enough wit to survive another decade, but never mind: these hours are full of mindless are sometimes well-written and usually well-performed fun under the "artist talks about his work" cover. Which he does rarely. But there are very good stories about the first time he had sex with his wife, about his involvement in such projects as a Prince doumentary or a Superman film, and that is fair and funny enough.
Some reviews: http://moviecynics.com/item/232, http://www.7mpictures.com/inside/reviews/kevinsmith2dvd_review.htm, http://www.dvdmg.com/eveningwithkevinsmith.shtml, http://www.talkingmoviezzz.com/view_review.php?id=95, http://www.filmcritic.com/misc/emporium.nsf/84dbbfa4d710144986256c290016f76e/9c4e13513a958d5408256cde000fc9ee?OpenDocument