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Season 21

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Season 20
Season 21
Season 22
Season 21
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Original run September 27, 2009-May 23, 2010
No. of episodes 23
Previous season Season 20
Next season Season 22

The Simpsons twenty-first season pulled ahead of "Gunsmoke" as the longest running American primetime television series 1989-2012. It first aired on September 27, 2009 and ended airing on May 23, 2010.

Episodes Edit

# Original airdate Prod. Code Title
1 - 2101 September 27, 2009 LABF13 "Homer the Whopper"
2 - 2102 October 4, 2009 LABF15 "Bart Gets a "Z""
3 - 2103 October 11, 2009 LABF16 "The Great Wife Hope"
4 - 2104 October 18, 2009 LABF14 "Treehouse of Horror XX"
5 - 2105 November 15, 2009 LABF17 "The Devil Wears Nada"
6 - 2106 November 22, 2009 LABF18 "Pranks and Greens"
7 - 2107 November 29, 2009 LABF19 "Rednecks and Broomsticks"
8 - 2108 December 13, 2009 MABF01 "O Brother, Where Bart Thou?"
9 - 2109 January 3, 2010 MABF03 "Thursdays with Abie"
10 - 2110 January 10, 2010 LABF20 "Once Upon a Time in Springfield"
11 - 2111 January 31, 2010 MABF03 "Million Dollar Maybe"
12 - 2112 February 14, 2010 MABF05 "Boy Meets Curl"
13 - 2113 February 21, 2010 MABF06 "The Color Yellow"
14 - 2114 March 14, 2010 MABF04 "Postcards From the Wedge"
15 - 2115 March 21, 2010 MABF07 "Stealing First Base"
16 - 2116 March 28, 2010 MABF10 "The Greatest Story Ever D'ohed"
17 - 2117 April 11, 2010 MABF08 "American History X-cellent"
18 - 2118 April 18, 2010 MABF09 "Chief of Hearts"
19 - 2119 April 25, 2010 MABF14 "The Squirt and the Whale"
20 - 2120 May 2, 2010 MABF12 "To Surveil With Love"
21 - 2121 May 9, 2010 MABF13 "Moe Letter Blues"
22 - 2122 May 16, 2010 MABF11 "The Bob Next Door"
23 - 2123 May 23, 2010 MABF15 "Judge Me Tender"
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