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 Mary Tyler Moore Show opening sequence instrumental version of the song was later used for the opening of Moore's 1979 variety series, "The Mary Tyler Moore Hour". Sonny Curtis recorded two full-length versions of the song, both with significantly different arrangements from the TV versions. The first was released as a single on Ovation Records in 1970, while the second was included on Curtis' Elektra Records album of the same name in 1980. The latter recording, which featured a country arrangement, reached No. 29 on the "Billboard" Hot Country Singles chart. The song has been covered by artists such as Ray Conniff, Joan Jett & The