Simon Cowell has revealed that he'd like David Bowie to appear on the next series of the X Factor. This year's series - which was won by Joe McElderry on Sunday - has seen the likes of Alicia Keys, Robbies Williams and George Michael guest star on the show. The judge told NME: "I'm thinking we should do something for David Bowie. I think that would be good. Just because he's a great songwriter." Simon also added that he wants Eminem and Dr Dre to appear: "I'd love to have them on as guest judges on a theme which would make them comfortable. "I've extended the invitation to Eminem already. What did he say? I don't know yet." And the music boss warned that the show shouldn't get too serious or people won't watch it. He said: "Once the show starts to take itself too seriously then it puts everyone off. There has to be a sense of humour in it and it is what it is. It's just a bit of fun. We went through a period, certainly in the last 10 years, when everything for me became too cynical and sniffy, as if the world is being run by so-called tastemakers and I don't like that."
