The Muppet Show - Season 5 Episode 20 Buddy Rich

Thanks to Gonzo's refrigerated mildew collection, the power goes out in the theater, and Beauregard almost electrocutes himself trying to fix it. Half of the acts have to perform in the dark, until Dr. Bunsen Honeydew hooks up a generator that runs on Beaker-power. Beaker runs on a huge wheel to generate power, and when he gets tired, Bunsen helps to motivate him by releasing a hungry tiger onto the wheel.