Sam's Spooky Chair

Anne Seymour's (Adelaide Cosgrove) great-uncle was character actor Harry Davenport, who played Dr. Meade in Gone with the Wind (1939) and the grandfather on Meet Me In St. Louis (1944). She would appear again, in a different role, on Samantha's Bad Day in Salem (1970).

One witch isn't supposed to be able to undo another witch's spell, yet Samantha turns Clyde from a chair back into a human when she wasn't the one who changed him in the first place.

It was explained early on in the series that a witch could undo another witch's spell if she knew what the spell was or how the first witch did what she did.