2004

All events that happened in 2004.

January

 * 4th: "Marge vs. Singles, Seniors, Childless Couples and Teens and Gays" aired for the first time.
 * 11th: "I, (Annoyed Grunt)-bot" aired for the first time.
 * 25th: "Diatribe of a Mad Housewife" aired for the first time.

February

 * 8th: "Margical History Tour" aired for the first time.
 * 15th: "Milhouse Doesn't Live Here Anymore" aired for the first time.
 * 22nd: "Smart and Smarter" aired for the first time.

March

 * 7th: Paul Winfield, actor and guest star, died.
 * 14th: "The Ziff Who Came to Dinner" aired for the first time.
 * 21st: "Co-Dependent's Day" aired for the first time.
 * 28th: "The Wandering Juvie" aired for the first time.
 * 31st: Bart Wars - The Simpsons Strike Back was released on DVD for Australia. The Dark Secrets of the Simpsons was released on DVD  for Australia. The Simpsons: Greatest Hits was released on DVD for Australia. The Simpsons: Go To Hollywood was released on DVD for Australia. The Simpsons: Too Hot For TV was released on DVD for Australia.

April

 * 4th: Ed Roth, unknown connection to Simpsons Comics, died.
 * 18th: "My Big Fat Geek Wedding" aired for the first time.
 * 25th: "Catch 'Em If You Can" aired for the first time.

May

 * 2nd: "Catch 'Em If You Can" aired for the first time.
 * 9th: "The Way We Weren't" aired for the first time.
 * 16th: "Bart-Mangled Banner" aired for the first time.
 * 23rd: "Fraudcast News" aired for the first time. Season 15 ended.

June

 * 7th: The Simpsons Gone Wild was released on VHS and DVD for the United Kingdom.
 * 15th: The Complete Fourth Season is released on DVD for the United States.

July

 * 7th: The Simpsons Gone Wild was released on VHS and DVD for Australia.
 * 9th: Isabel Sanford, actress and guest star, died.

August

 * 2nd: The Complete Fourth Season is released on DVD for the United Kingdom.
 * 16th: The Simpsons: Against the World was released on DVD for the United Kingdom. The Simpsons: Heaven and Hell was released on DVD  for the United Kingdom. The Simpsons: On Your Marks, Get Set, D'oh! was released on DVD for the United Kingdom. Sex, Lies & the Simpsons was released on DVD for the United Kingdom. The Simpsons.com was released on DVD for the United Kingdom.
 * 25th: The Complete Fourth Season is released on DVD for Australia.

September

 * 14th: The Simpsons Gone Wild was released on VHS and DVD for the United States.
 * 15th: Johnny Ramone, guitarist and guest star, died.

October

 * 5th: Rodney Dangerfield, actor and guest star, died.
 * 25th: The Simpsons Christmas 2 was released on DVD for the United Kingdom.

November

 * 2nd: The Simpsons Christmas 2 was released on DVD for the United States.
 * 3rd: The Simpsons: Against the World was released on DVD for Australia. The Simpsons: Heaven and Hell was released on DVD for Australia. The Simpsons: On Your Marks, Get Set, D'oh! was released on DVD for Australia. Sex, Lies & the Simpsons was released on DVD for Australia. The Simpsons.com was released on DVD for Australia.
 * 7th: Season 16 started. "Treehouse of Horror XV" aired for the first time.
 * 14th: "All's Fair in Oven War" aired for the first time.
 * 21st: "Sleeping with the Enemy" aired for the first time.

December

 * 5th: "She Used to Be My Girl" aired for the first time.
 * 12th: "Fat Man and Little Boy" aired for the first time.
 * 21st: The Complete Fifth Season is released on DVD for the United States.
 * 25th: The Simpsons' Christmas Message aired for the first time.