The film demonstrated advances in the technology of self-shadowing. Lasseter said that "The animation of a lamp whose head is a light-source, moving around and self-shadowing the world around him, was a perfect matching of technology and subject matter." "Luxo Jr." made its debut at the 1986 SIGGRAPH show in Dallas. The film received critical acclaim for its photorealistic style and emotional impact. Luxo Jr. also appeared in four educational short films created by Pixar specially for "Sesame Street" in 1991: "Light & Heavy", "Surprise", "Up and Down" and "Front and Back". In the "Toy Story" franchise, a red Luxo lamp appears on Andy's desk. A 6-ft. high animatronic figure modeled after Luxo Jr. stood near the Toy Story Midway Mania attraction at the Disney's Hollywood Studios theme park. The animatronic often danced to music on a ledge near the entrance. In 2010 Disney removed the animatronic without offering an official explanation, but the Luxo ASA lawsuit may have been a factor. At Disney California Adventure, there is an animatronic of Luxo Jr. on top of the Pixar Pier marquee. Luxo ASA, the Norwegian company that manufactures Luxo lamps, sued Pixar and its parent company Disney in 2009 by claiming that Disney violated its trademarks by selling promotional lamps branded as the Luxo Jr. character. Disney had planned on bundling the Luxo Jr. lamp with the collector's edition of the "Up" Blu-ray release. Luxo ASA claimed that the Luxo Jr. merchandise would "cause devastating damage to Luxo and dilute the goodwill which Luxo has built up." Disney settled with Luxo ASA and agreed not to sell Luxo Jr. lamps while Luxo ASA did not object to "artistic renditions" of the lamp and allowed Pixar to keep using Luxo Jr. as a character.