Blithe Spirit (1945)

As a lesson to not mess with the supernatural, Blithe Spirit features Rex Harrison as a British author who realizing he needs more material for his next book hires a medium to perform a séance in his home. Unfortunately the séance is too successful and brings forth his dead former wife to haunt him. Despite an unfortunate makeup choice where the ghost looks like the Wicked Witch of the West, the film is witty and amusing, culminating in an end where everyone receives their just desserts.

Oscar Win: Best Effects, Special Effects