"Pine Barrens" is easily the funniest Sopranos episode ever, and if I wanted to convert someone over with a single episode, that would be the one. Even though it is near the end of Season 3, you could get the gist of everything going on pretty quickly (Tony having a g/f, who is a little crazy, on the side, Meadow's b/f cheating on her, etc.). But I still say that "Long Term Parking" is the best episode of the show ever, but you had to have watched the entire series to understand and grasp the full impact of that episode.