Puddy on Mad about You

Hey guys, I'm new to the NG and want to say I enjoy reading the posts everyday. I noticed last night Puddy was on a syndicated Mad About You hitting on Jamie's sister Lisa, was it just the one time or did he appaer more often. Just wondering... Also, thanks for making me realize how much studying up I need to do to call myself a real Seinfeld fan. I look forward to reading your posts as often as I can. Bill