S21 E1-Homer the Whopper
S21 E2-Bart Gets a 'Z'
S21 E3-The Great Wife Hope
S21 E4-Treehouse of Horror XX
S21 E5-The Devil Wears Nada
S21 E6-Pranks and Greens
S21 E7-Rednecks and Broomsticks
S21 E8-Oh Brother, Where Bart Thou?
S21 E9-Thursdays with Abie
S21 E10-Once Upon a Time in Springfield
S21 E11-Million Dollar Maybe
S21 E12-Boy Meets Curl
S21 E13-The Color Yellow
S21 E14-Postcards from the Wedge
S21 E15-Stealing First Base
S21 E16-The Greatest Story Ever D'ohed
S21 E17-American History X-cellent
S21 E18-Chief of Hearts
S21 E19-The Squirt and the Whale
S21 E20-To Surveil with Love
S21 E21-Moe Letter Blues
S21 E22-The Bob Next Door
S21 E23-Judge Me Tender
Videos: Trailers, Teasers, Featurettes
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 received mainly positive reviews from critics, with many praising "The Squirt and the Whale", "To Surveil with Love" and "The Bob Next Door". The show moved up 16 positions in the Nielsen ratings from the previous season and received numerous award nominations, winning two - an Emmy Award for Anne Hathaway for her voicing in "Once Upon a Time in Springfield", and an Annie Award for "Treehouse of Horror XX".
Streaming, rent, or buy The Simpsons – Season 21:
Currently you are able to watch "The Simpsons - Season 21" streaming on Disney Plus.