the motel and carnival that allowed for a change of pace. The scene of a naked Bart on his skateboard was Matt Groening's idea, who had always wanted to have Bart skateboarding naked, and Mike Scully had the idea of showing Bart's penis for two seconds. Storyboard artist Martin Archer was credited for devising the way to cover Bart's genitals with different things before they are exposed to the viewer. While the crew agreed that the gag would be funny, they wondered it if would mean an R-rating for the film, as they were happy with a PG-13 rating and that the gag was nonsexual and silly. They were ultimately able to get away with the joke because it wasn't live-action nor was it Homer's genitals. Further changes were made after the March 2007 preview screenings of the film in Portland, Oregon and Phoenix, Arizona. This included the deletion of Kang and Kodos heavily criticizing the film during the end credits. A lot of people at the screenings found the original film too coarse, and some of Homer's behavior too unkind, so several scenes were toned down to make him appear nicer. Russ Cargill was redesigned several times, originally appearing as an older man whose speech patterns Albert Brooks based on Donald Rumsfeld. The older model was the one used by Burger King for the action figure. Cargill's scene with Bart and Homer at the film's conclusion was added in to fully resolve his story, and the "Spider-Pig" gag was also a late addition. One excised scene, before the dome is put over Springfield, had Mr. Burns reminding viewers that it was the last point in the film that they could get a refund. Other deletions included Homer's encounter with a sausage truck driver, a scene with Plopper the pig at the end, and a news report, showing the dome's effect on daily life in Springfield in areas such as farming and sports, all of which were featured on the DVD, were cut because they did not fit the overall context of the film. Several musical numbers, at various intervals throughout the film, were cut. These included a song about Alaska, featuring music by Dave Stewart of Eurythmics. Jean said it "got pretty far along in the animation, and then we got scared that the movie began to drag in that section." Music Producer James L. Brooks chose Hans Zimmer