Ultimate cross over, they'll put in celebs (Rylan constantly goes on about "Getting them in" when they say something on bbbots) The Time Bomb being the celebrities have gone back in time to when they weren't famous or something.

I guess that if they're going in now then they're still not famous.

I wouldn't be keen on celebs going in. But IAIN LEE would certainly be an interesting choice if they did...

Jimmy Bullard would be a good bad guy