S02E05: The Joker is a Card

Need some amusement in your life? Call Uncle Arthur, or, in this case, don't call him. Uncle Arthur arrives playing practical jokes on Darrin and Endora while Samantha is trying to get these two antagonists to make up once and for all. After many hits and misses, Darrin needs Uncle Arthur's help in getting Endora back. This is the famous ""Yagazuzie Zim"" episode.