Season 21
Artwork
| # | Image | Title | Aired |
|---|---|---|---|
| 1 |  | Homer the Whopper | Sep 27, 2009 |
| 2 |  | Bart Gets a 'Z' | Oct 4, 2009 |
| 3 |  | The Great Wife Hope | Oct 11, 2009 |
| 4 |  | Treehouse of Horror XX | Oct 18, 2009 |
| 5 |  | The Devil Wears Nada | Nov 15, 2009 |
| 6 |  | Pranks and Greens | Nov 22, 2009 |
| 7 |  | Rednecks and Broomsticks | Nov 29, 2009 |
| 8 |  | Oh Brother, Where Bart Thou? | Dec 13, 2009 |
| 9 |  | Thursdays with Abie | Jan 3, 2010 |
| 10 |  | Once Upon a Time in Springfield | Jan 10, 2010 |
| 11 |  | Million Dollar Maybe | Jan 31, 2010 |
| 12 |  | Boy Meets Curl | Feb 14, 2010 |
| 13 |  | The Color Yellow | Feb 21, 2010 |
| 14 |  | Postcards from the Wedge | Mar 14, 2010 |
| 15 |  | Stealing First Base | Mar 21, 2010 |
| 16 |  | The Greatest Story Ever D'ohed | Mar 28, 2010 |
| 17 |  | American History X-cellent | Apr 11, 2010 |
| 18 |  | Chief of Hearts | Apr 18, 2010 |
| 19 |  | The Squirt and the Whale | Apr 25, 2010 |
| 20 |  | To Surveil with Love | May 2, 2010 |
| 21 |  | Moe Letter Blues | May 9, 2010 |
| 22 |  | The Bob Next Door | May 16, 2010 |
| 23 |  | Judge Me Tender | May 23, 2010 |