The Simpsons their advertising. As a promotion for "The Simpsons Movie", twelve 7-Eleven stores were transformed into Kwik-E-Marts and sold "The Simpsons" related products. These included "Buzz Cola", "Krusty-O" cereal, pink doughnuts with sprinkles, and "Squishees". In 2008 consumers around the world spent $750 million on merchandise related to "The Simpsons", with half of the amount originating from the United States. By 2009, 20th Century Fox had greatly increased merchandising efforts. On April 9, 2009, the United States Postal Service unveiled a series of five 44-cent stamps featuring Homer, Marge, Bart, Lisa and Maggie, to commemorate the show's twentieth anniversary. "The Simpsons"
The Simpsons shorts December 17, 1989, as an independent series with the Christmas special "Simpsons Roasting on an Open Fire". One marketing study found that only 14 percent of Americans were familiar with the shorts, compared to 85 percent in November 1990 who were familiar with the Simpsons family, 11 months after the full-length show began airing. 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