I have note seen Jersey Girl, but i have seen the rest of his movies. Clerks is by far the original and favorite, I loved Dogma, saw so many truths on it that it scared me LOL. Chris Rocks thought of religion as a guide line and not a word for word fact is something i think more people should adopt. Mallrats was funny, and Chasing Amy was genius. I even like Jay and SIlent Bob Strikes Back.... Sure it was stupid, but he told everyone elses story, it was Jay and Bobs story, and who couldn't tell me that those two guys wouldn't have an outragous and stupid story to tell.
I dunno if a sequal to Clerks will be as good, and i don't really care, i know from Kevin Smith though, it will have someonthing good to offer.