Goofy with Donald, including "Polar Trappers" (1938), where they first appeared without Mickey Mouse. Three more "Goofy" shorts were produced in the 1960s after which Goofy was only seen in television and comics. He returned to theatrical animation in 1983 with "Mickey's Christmas Carol". His last theatrical appearance was "How to Hook Up Your Home Theater" in 2007. Goofy has also been featured in television, most extensively in "Goof Troop" (1992–1993), as well as "House of Mouse" (2001–2003) and "Mickey Mouse Clubhouse" (2006–2016). Originally known as Dippy Dawg, the character is more commonly known simply as "Goofy," a name used in
Cartoon physics a cliff, gravity has no effect until the character notices. In words attributed to Art Babbitt, an animator with the Walt Disney Studios: "Animation follows the laws of physics—unless it is funnier otherwise." Specific reference to "cartoon physics" extends back at least to June 1980, when an article "O'Donnell's Laws of Cartoon Motion" appeared in "Esquire". A version printed in V.18 No. 7 p. 12, 1994 by the Institute of Electrical and Electronics Engineers in its journal helped spread the word among the technical crowd, which has expanded and refined the idea. These laws are outlined on dozens of websites.