The Simpsons shorts is a series of one-minute shorts that ran on the variety show The Tracey Ullman Show for three seasons, before the characters spun off into their own half-hour prime time show called The Simpsons. It features the Simpson family, which consists of Homer, Marge, Bart, Lisa, and Maggie. The series was created by Matt Groening, who designed the Simpson family and wrote many of the shorts. 48 shorts were produced, starting with "Good Night", which first aired on April 19, 1987. The final short to air was "TV Simpsons", originally airing on May 14, 1989. The Simpsons would later debut on December 17, 1989 with the Christmas special "Simpsons Roasting on an Open Fire". Only a few of these shorts have been released on DVD. "Good Night" was included on The Simpsons Season 1 DVD. Five of these shorts were later used in the clip show episode "The Simpsons 138th Episode Spectacular" on the half-hour show, which was released on the Season 7 DVD. These five shorts were "Good Night", which was featured in its entirety and portions of "The Perfect Crime", "Space Patrol", "World War III", and "Bathtime". Groening has announced that all of the shorts will be available on mobile phones.