[Z]

I don't know about an All Star X-Factor because I think that's very cheesy and camp, but I think it would be quite cool to have a live Saturday night special starring successful X Factor acts who have gone on to have sustainable careers beyond the show. Shayne Ward, Leona Lewis, Alexandra Burke, JLS, Diana Vickers, Olly Murs, Jedward, Matt Cardle (arguable), Rebecca Ferguson, One Direction, Cher Lloyd, Aiden Grimshaw (arguable), Little Mix, Amelia Lily and whoever wins this series. Also potentially get Parade and Girls Can't Catch (think they've disbanded though) in there because of Emily & Phoebe from Hope being in those respective groups.

Anyway, say a line up of Shayne, Leona, Alexandra, JLS, Diana, Olly, Jedward, Rebecca, One Direction, Cher, Little Mix and Amelia - 12 acts with a variety of hits among them, I'm sure it would do well because made for TV music specials usually do. They could have skits in between performances etc, a bit like the Spice Girls or Girls Aloud shows with the same concept. I'd definitely watch.