MATT GROENING at the British Comedy Awards, London, England - 14.12.05 and RICKY GERVAIS on the set of his 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.