The famous family are heading for the UK for their 300th episode, and during their trip bump into JK Rowling and LOTR star Sir Ian McKellan.
And for a while, they might have met David Beckham too!
Al Jean said: "We thought about it, we didn't ask. I've heard of him because my daughter plays soccer."
The 300th episode of The Simpsons will be shown on Sky One on 20 April.