Okay, we all heard that Jack was exposed in the episode "The Charming Stranger". But I'm sure very few of you have actually seen it. Well, on this web site you finally get to see it! I'm not joking!
My personal comment has to be consistent to those of Ritter himself and others who have seen it: there really isn't that much to see. All you can see are parts of his skin and definitely not his testicles.