'The Simpsons' are a family who live in the fictional town of Springfield. Homer, the father, works as a .
He is married to Marge Simpson, a .
They have three children: Bart, a ten-year-old troublemaker; Lisa, an eight-year-old activist; and Maggie, the baby of the family .
Since its debut on December 17, 1989, more than 600 episodes of 'The Simpsons' .
During this time, it and it has become the longest running American animated TV show.