Professor Oak's Pokémon Lecture
Professor Oak's lecture, also named Professor Oak's Big Encyclopedia (Japanese: オーキド博士のポケモン大検定) in the Diamond & Pearl series, is a segment featured at the end of anime episodes in Japan.
Generally, the lecture will start with Professor Oak using the reels of a slot machine to show the silhouette of a Pokémon. The display on his computer will switch to show the image of the Pokémon, surrounded by some general information. He will then show some clips of the Pokémon in the anime as he discusses it. After this, he will show a live example of the Pokémon in his laboratory. Frequently, the Pokémon will attack or hurt him shortly after. The lecture sometimes closes with a Pokémon senryū.
There are also some special lectures, such as those which will promote an upcoming movie or discuss one of the characters.
The segment has never been used in the dub, though footage from the lecture of Alakazam was used to introduce the VHS release of Mewtwo Strikes Back.