Pokettāri Monsutāri was the 13th and lasting ending for the original Japanese Pocket Monsters anime series. The ending starts off with a bunch of chained Poké balls floating around in circles. Pikachu appears and begins to dance on the Poké balls.
Electrode, Jigglypuff, Jumpluff, Bellsprout, Gyarados, Dratini, Skarmory, Qwilfish, Jolteon, Tangela and Piloswine replace the Poké balls as the song lyrics say: "Round 'uns Thin 'uns Sharp 'uns Hairy 'uns" which corresponds to those Pokémon's looks.
The lyrics of the song then mention running Pokémon and Tauros, Rapidash, Dodrio and Raticate are shown running. Various other groups of Pokémon are also shown throughout the song that correspond to the lyrics.
A giant jigsaw puzzles depicting a Poké ball is shown and silhouettes of various Pokémon are scattered over top of it as is zoom out further and further. The ending transitions to Pikachu dancing and its joined by Togepi, Bellsprout, Piloswine, Jigglypuff, Dodrio and finally Unown and they dance until the song ends and it fade out.