The Simpsons opening sequence is a callback to the film. Bart writes "I will not wait 20 years to make another movie" on the chalkboard and skateboards through Springfield, which is still recovering from the dome incident. Several movie characters reappear, including president Schwarzenegger, the Multi-Eyed Squirrel, Colin, Russ Cargill, and the Medicine Woman. We also see that the Simpsons' house is still under construction and the silo is strapped to Homer's car. Plopper the pig is also featured for the first time in the series, during the couch gag and Homer refers to him as "my summer love." A special opening sequence, featuring
The Simpsons opening sequence 1's. A new permanent opening sequence was animated for the show's transition to the High Definition format, premiering with the Season 20 episode "Take My Life, Please." This sequence is similar to the previous one, but features many visual changes that take advantage of the wider format. The sequence opens as usual with movement through cumulus clouds, while a 3-eyed crow flies by. The crow is sometimes replaced by characters, like Shary Bobbins flying by using her umbrella, or also the Planet Express Ship from "Futurama". The camera then zooms past the nuclear power plant and into the town square