The Great Gonzo's Pandemonium Pizza Parlor was an abandoned concept for a Muppet-themed restaurant for the Disney-MGM Studios (now known as Disney's Hollywood Studios), at Walt Disney World. The concept was to create a restaurant run by Gonzo and Rizzo.
Part of the original concept was to have animatronic Muppet rats deliver pizzas to the tables by way of a "train track" system. Other features from the concept included Gonzo being heard crawling through the duct work along the ceiling, video screens depicting classic Muppet clips as well as the pandemonium in the kitchen (featuring Gonzo, Rizzo and the Swedish Chef) and the occasional explosion, blowing open the doors of the kitchen, sending clouds of smoke and chicken feathers into the dining room.
The walls of this restaurant, similar to the lobby of Muppet*Vision 3D, would have been covered with recreations of props from various Muppet films and shows, as well as random sight gags.
Plans for the restaurant, along with most of the attractions planned for the proposed Muppet Studios area, were abandoned after the merger between The Walt Disney Company and The Jim Henson Company fell apart. The location that was to house this eatery is now occupied by Mama Melrose's Italian Ristorante. The "train track" system was completed before the merger fell through, and is still in place.
Pizza Planet at Disney's Hollywood Studios is currently receiving heavy work which included removing all references to Pizza Planet on the outside. Disney's building permits confirmed that they are building a Muppets themed Pizza shop in the building called Pizza Rizzo.