Pokemon - episode 67 - 07 Oct, 1998

Back in Pallet Town, Ash finds Gary, already there, waiting to partake in the Pokémon League. Always having a bitter rivalry with Gary, Professor Oak tells them both the meaning of Pokémon. Meanwhile, Team Rocket is trying to get inside the lab to steal the Pokémon after their headquarters is destroyed by Mewtwo. (Source: Wikipedia)