Hulu has ordered a reboot of Animaniacs ? one of the most beloved cartoon TV shows of the 1990s ? for a two season run starting in 2020. The streaming service is also immediately adding the existing library of not only Animaniacs episodes, but also its sisters series Pinky and the Brain, Pinky, Elmyra and the Brain, and Tiny Toon Adventures. Animaniacs originally ran for five seasons on the FOX network and, later, the WB. Animaniacs was essentially a variety show, collecting short skits featuring a rotating cast of characters anchored by three unhinged siblings.