Pokemon: Yadoking no Ichinichi
Pocket Monsters: Yadoking no Ichinichi
Pokemon: Slowking's Day
ポケットモンスター ヤドキングのいちにち
It consists of nothing but Pokémon-speak--similar to the mini-movies that air with each theatrical movie. It's a short special based on life of the Pokémon Slowking.
(Source: Bulbapedia and Graffitti studio)