The Wacky Wabbit is a 1942 Merrie Melodies cartoon directed by Bob Clampett. It stars Bugs Bunny and Elmer Fudd (voiced by Mel Blanc and Arthur Q. Bryan, respectively).
A short clip from this cartoon can be seen in the opening credits of the Futurama episode "Love's Labour Lost in Space".
Availability
VHS - Cartoon Moviestars: Elmer!
Laserdisc - The Golden Age of Looney Tunes, Vol. 2, Side 5: Bob Clampett
DVD - Looney Tunes Golden Collection: Volume 5, Disc 3
Additionally, since the cartoon has fallen into the public domain, it can be found on various unauthorized VHS tapes and DVDs in varying quality. It can also be found on video streaming websites.