Yin Yang Yo! episode Attack of the Vidiots
April 21, 2007
The twenty-second episode of the series is about Yang being sucked into his video game by The Lesson, which forces him to play endlessly (or, at least, until he has learned how bad it is to play too much videogames). At a certain point, when Yang saves the princess, she says "The real princess is the other castle", referencing the Mushroom Retainers' sentence from Super Mario Bros. "Thank you Mario! But our princess is in another castle!"
Additionally the princess was kidnapped by a gorilla and kept in a barrel, likely referencing Mario's original game, Donkey Kong.
The creators of Yin Yang Yo! held no right over Nintendo's Mario, but they only included a minor reference to the game.