| Best. 20 Years. Ever
| Special Information
| Original Airdate:
|| January 14, 2009 - January 14, 2010
On January 14, 2009, Fox started the Best. 20 Years. Ever. campaign to celebrate 20 years of The Simpsons around the world.
It culminated on January 14, 2010 with a special two hour celebration with a documentary made by Morgan Spurlock, The Simpsons 20th Anniversary Special – In 3-D! On Ice!, and the new episode "Once Upon a Time in Springfield". The Complete Twentieth Season was released to coincide with the event.