This is one of the few episodes where Ash orders Pikachu to get into his Poké Ball. Though he doesn't succeed as usual, the fact that he tried is unusual.
This is also the first episode where a previously caught Pokémon, other than Psyduck, forces its way out of a Poké Ball. Charmander, Squirtle, Bulbasaur, and Pidgeotto all exit their Poké Balls to keep Ash warm throughout the night.
This episode is featured on Volume 9: Charmander from VIZ Media's Pokémon All-Stars series.
This episode marks the first time where Pikachu displays its remarkable ability to imitate other Pokémon and people. In this case, Pikachu does an impression of Brock.
Parts of this episode were reanimated and used for flashback material for The Fires of a Red-Hot Reunion.