Bugs Bunny's Howl-oween Special was a Looney Tunes Halloween television special. It premiered on CBS October 26, 1978. It blended new footage with the following classic looney tunes shorts from the 50's and 60's:

A Haunting We Will Go (1966) (Daffy Duck's nephew encounters Witch Hazel while trick or treating. Daffy doesn't believe his nephew until he see the witch himself)

Hyde and Hare (1955) (Bugs Bunny goes to Dr. Jekyll apartment to show Witch Hazel his "tea")

Hyde and Go Tweet (1960) (While Bugs encounters Dr. Jekyll, Sylvester has a dream on his encounter with Tweety)

A Witch's Tangled Hare (1959) (Witch Hazel chases Bugs all the way to an ancient castle)

Transylvania 6-5000 (1963) (Used footage: Witch Hazel transforms into a vampire after drinking some potion, while Bugs explores her place)

Bewitched Bunny (1954) (Witch Hazel is transformed into a female bunny, whom Bugs sees as a love interest)