Madonna, probably the only woman in the world who can put her hand up and say that she's had more plastic surgery than
Sharon Osbourne, was reportedly asked to appear in
Dr Who (but probably only because they could then do without a special effects monster).
Apparently an entire episode was written especially for Madge, entitled 'The Last Cassandra'. Madonna showed interest and even bothered to get someone else to read her script (although anyone who has seen her in Dick Tracey should know that the woman should never be allowed to act).
However, Madonna soon decided that it wasn't for her, perhaps because it wasn't written by her husband Guy (although anyone who has seen Revolver knows that the man should never be allowed to do films etc etc).
But possibly the worst part of this sorry tale is that Madonna was actually first choice over Brave Kylie. Brave Kylie! No, she can't act either but she's so... Brave.
Here's a suggestion, why not cast an actress instead? Or perhaps aim a little lower, I'm sure Kerry Katona won't say no. And she can sing and act (those Iceland ads are surely definitive proof).