Animaniacs

Rita and Runt were originally conceptualized as hosts of the show akin to Gianni e Pinotto (1952) before Tom Ruegger scrapped the idea because he felt that it did not align with the idea of the show's "energy."

Game Over- Insert Coin

When the series was shown in reruns on Nickelodeon and Nicktoons, almost all references to Warner Bros. were removed from the opening, allowing for a very unusual transition involving the Nickelodeon logo bursting and the opening cut right to the Warner Bros. water tower door opening.

Edited into Yakko's World: An Animaniacs Singalong (1994)