Matt Groening at The Simpsons 400th episode party held at the Fox lot. Los Angeles, California - 08.05.07

The Extras star appeared in a cameo role on the hit animated series as well as penning an entire episode after Groening invited the British funnyman to lend his skills to the show.

He says, "I loved working with Ricky Gervais. He wrote his own episode and it made my life easier because I didn't have to write it."

Source: WENN