Animaniacs

S03:E06 - Gimme the Works/Buttons in Ows/Hercules Unwound

First, in "Gimme the Works", the Warners ask for a day off. Next, in the "Wizard of Oz" parody, "Buttons in Ows", Mindy and Buttons travel through an enchanted land a few days before Dorothy arrives. Then, when the Warner siblings leave in the middle of "Hercules Unwound" and take guest star Hercules with them, Pinky and The Brain replace them. The Brain¿s plan: harness the lightning power of Zeus--and take over the world!