Due to the sheer number of episodes, this writeup has been split into two parts. For information on seasons 1-10 of The Simpsons, see The Simpsons episode guide. For seasons 11 onwards, milestones and trivia, read on below.
In addition to these episodes there are two music videos: (7F75) Do The Bartman and (7F76) Deep, Deep Trouble. These were both released in 1992, last around five minutes each, and are rarely seen on syndicated television.
Milestones:
- Episode #1 was (7G08) Simpsons Roasting On An Open Fire, aired on December 17, 1989.
- Episode #100 was (1F18) Sweet Seymour Skinner's Baadasssss Song, aired on April 29, 1994
- Episode #200 was (5F09) Trash Of The Titans, aired on April 26, 1998
- Episode #300 was (EABF04) The Strong Arms Of The Ma, aired on February 2, 2003. ((EABF05) Barting Over, aired on February 16, 2003, was promoted as episode #300, but was in fact the 302nd episode to be aired.)
- At an average rate of 21 episodes a season, episode #400 will occur early in season 19, 2007-2008.
Sources:
http://www.snpp.com
http://www.tvtome.com/Simpsons/
The Simpsons: A Complete Guide to Our Favorite Family, by Matt Groening
The Simpsons Forever!, by Matt Groening
Every last episode of the show itself