2001

All events that happened in 2001.

January

 * 7th: "HOMЯ" aired for the first time.
 * 14th: "Pokey Mom" aired for the first time.

February

 * 4th: "Worst Episode Ever" aired for the first time.
 * 11th: "Tennis the Menace" aired for the first time.
 * 18th: "Day of the Jackanapes" aired for the first time.
 * 25th: "New Kids on the Blecch" aired for the first time.

March

 * 4th: "Hungry, Hungry Homer" aired for the first time.
 * 11th: "Bye, Bye, Nerdie" aired for the first time.
 * 26th: The Simpsons: Night of the Living Treehouse of Horror was released.

April

 * 1st: "Simpson Safari" aired for the first time.
 * 12th: The Simpsons Wrestling was released.
 * 15th: Joey Ramone, a musician and guest star, died.
 * 29th: "Trilogy of Error" aired for the first time.

May

 * 6th: "I'm Goin' to Praiseland" aired for the first time.
 * 13th: "Children of a Lesser Clod" aired for the first time.
 * 20th: "Simpsons Tall Tales" aired for the first time. Season 12 ended.

June

 * 19th: Lee Mishkin, animation timer, died.
 * 22nd: Kent Holaday, a lip sync, died.
 * 27th: Jack Lemmon, an actor and guest star, died.

September

 * 24th: The Complete First Season is released on DVD for the United Kingdom.
 * 25th: The Complete First Season is released on DVD for the United States.

November

 * 6th: Season 13 started. "Treehouse of Horror XII" aired for the first time.
 * 11th: "The Parent Rap" aired for the first time.
 * 18th: "Homer the Moe" aired for the first time.
 * 19th: George Harrison, a musician and guest star, died.
 * 24th: The Simpsons Road Rage was released on the for the United States.
 * 30th: The Simpsons Road Rage was released on the for the United Kingdom.

December

 * 1st: The Simpsons Road Rage was released on the for the United States.
 * 2nd: "A Hunka Hunka Burns in Love" aired for the first time.
 * 9th: "The Blunder Years" aired for the first time.
 * 16th: "She of Little Faith" aired for the first time.
 * 17th: The Simpsons Road Rage was released on the for the United States.
 * 18th: Dan DeCarlo, comic layout artist, died.