Have you ever been watching a show and suddenly, there's a reference to Jehovah's Witnesses? I was watching an English mystery show from a while back and the main character Hetty, was giving a list of religions that could have drawn off a young girl. One of the "fringe" groups was tada - Jehovah's Witnesses.
There is plenty of other more well known clips like SNL coneheads being approached by fake JW's. Have any more odd spots?