 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 , which was featured on the DVD , 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 sport , was cut because it 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 . " 
