Ranma ½: Battle ga Ippai 29-nin no Korinai Yatsura
English title: Ranma ½: Huge Battle! 29 Unteachable Fools
Japanese title: らんま1/2 スペシャルビデオ バトルがいっぱい29人の懲りないやつら
Type: OVA
Episodes: 1
Source: Manga
Genres: Comedy, Slice of Life
Studios: Kitty Film Mitaka Studio
Duration: 24 min
Rating: PG-13 - Teens 13 or older

This special, known in Japan as "Batoru Kaiibai 29 Hitou Korinai Yatsura," was available through the Kitty Animation Circle making it a difficult item to come by. It contained clips from twenty-nine of Ranma's most memorable opponents from the television series.

(Source: furinkan.com/ranma/anime/specials.html)