The Simpsons creator Matt Groening has confessed he's hurt British funnyman Ricky Gervais hasn't picked him for a part on hit comedy show Extras. Despite hailing his cameo on the cult cartoon series the pinnacle of his comedic career, Gervais has failed to return Groening's favour and invite him to star in Extras. And Groening, who admits he's a big fan of the series, can't help but feel snubbed. He says, "He (Gervais) didn't ask me. "It would have been perfect for me because I worked as an extra when I first moved to Los Angeles in 1978." Previous guests on the show include Samuel L Jackson and Titanic beauty Kate Winslet.