Maggie Simpson Maggie's occasional speaking parts and other vocalisations are currently provided by Nancy Cartwright, but she has also been voiced by guest stars James Earl Jones, Elizabeth Taylor and Jodie Foster, and by series regulars Yeardley Smith and Harry Shearer. Maggie has appeared in various media relating to "The Simpsons" – including video games, "The Simpsons Movie", "The Simpsons" Ride, commercials and comic books – and has inspired an entire line of merchandise. "The Simpsons" uses a floating timeline in which the characters do not physically age, and as such the show is assumed to be set in the current year.
The Simpsons (season 21) technically counts as a component of the 20th production season (and of the 21st broadcast season). It does not, however, count towards the series' official animated episode count (i.e., it is not episode 452). The Simpsons (season 21) "The Simpsons" twenty-first season aired on Fox from September 27, 2009 to May 23, 2010. It was the first of two seasons that the show was renewed for by Fox, and also the first season of the show to air entirely in high definition. With this season, "The Simpsons" established itself as the longest-running American primetime television series surpassing "Gunsmoke". The season