Treehouse of Terror
The first Halloween special for "The Simpsons" aired in 1990. The shows are referred to "Treehouse of Horror". The very first was called "The Simpsons Halloween Special".
The two aliens on The Simpsons during Halloween are called Kang and Kodos.
Treehouse of horror 1 - 15
Simpsons Goes Halloween on Transformers
Technically Zero. While the first episode was alternately called The Simpsons Christmas Special it is simply the first episode, it is not a separate special created for the Simpsons.As of the 25th Season, there has been 12 Christmas themed episodes, but those are also just regular episodes, not specials.
The Simpsons Movie
Ringo was the first Beatle to appear in the Simpsons (he was the first major celebrity to appear in the series) in an episode called Brush with Greatness.Paul and Linda McCartney appeared in Lisa the Vegetarian.George appeared in Homer's Barbershop Quartet.
Marge Simpson.
"The Simpsons Movie" obviously.
The baby on the Simpsons is Maggie Simpson.
742 Evergreen Terrace, but I've seen a few episodes where the number is different
It was called "Do the bartman"