Whenever Wednesday pulls the cord in the opening credits, it either pulls her up, splashes slime on her, or activates a trap door for Pugsley.
The picture at the end of the opening credits changes depending on the episode.
The first season's closing credits features a portrait of the Addams family at the end. Then Thing pulls down a curtain, which features the Hanna-Barbara logo covered in cobwebs.
The second season's closing credits features the Hanna-Barbara logo with a grinning Uncle Fester. Then Mrs Normanmeyer states "It's disgusting and macabre! "