Paul Lynde made his debut appearance in the first-season episode Driving Is the Only Way to Fly (1965). His role as Samantha's nervous driving instructor Harold was well received by viewers, so, the recurring role of Endora's practical-joking brother was created. Lynde made 10 appearances as Uncle Arthur.
Endora again purposely bungles Darrin's name. This time she calls him Dexter
The device that Endora refers to as "opera glasses" are really a lorgnette because they have a handle.