Music from Pikachu's Vacation can be heard in this episode.
The Ice Cave in this episode is not named "Ice Path", as it is in the games, though its location as the gateway to Blackthorn City indicates that it is indeed the "Ice Path".
Although Ash, Misty, and Brock were all soaked-up with water, they were not affected by the electricity from Pikachu's Thunderbolt.
Wobbuffet uses Counter to deflect Water Gun, when it should have been Mirror Coat.