This happened in the episode "Mobile Homer" which is the thirteenth episode of season sixteen.
They was no episode of The Simpsons with Chelsea. Chelsea FC simply were represented as Simpsons characters as promotion for the Simpsons 25th anniversary.
The Simpsons Movie
As of 2012, there is just one Simpsons movie: The Simpsons Movie (2007).
he's on the simpsons.
The Simpsons Bowling happened in 2000.
The Simpsons Skateboarding happened in 2002.
The Simpsons Wrestling happened in 2001.
The Simpsons Game happened in 2007.
The Simpsons Arcade Game happened in 360.
In the US it was October 14, Thursday 1993.
Nothing happened because Thursday never existed. It was a Tuesday on the 21st of January 1992.
Yes. This happened in Season 23.
got suspended on Thursday and returns Wednesday
Car 54 Where Are You - 1961 What Happened to Thursday 1-22 was released on: USA: 18 February 1962
October 8th, 1942 fell on a Thursday.
Your question is a bit vague as nothing has 'happened' to him. He is still a part of the show and appears regularly either at the plant or Moe's.