Conversation so far:
what decided the casting for the simpsons movie?
Groening said they tried to include every single character in the film, with 98 having speaking parts.
Are there any other interesting aspects about this article?
The cast did the first of three table readings in May 2005, and began recording every week from June 2006 until the end of production.
when was the end of production?
CANNOTANSWER.
what is the most interesting part of this article, in your opinion?
Although he does not provide the voice, Arnold Schwarzenegger is President of the United States rather than then-President George W.
Bush because, according to Groening.

Question: why was he president of the US instead of George bush?
Self-contained rewrite: Why was Arnold Schwarzenegger president of the US instead of George Bush in The Simpsons Movie?