Okay so I've been reading through the thread now and I think I understand.
So, I choose a celebrity (or similar) and write why I should be chosen? Like how I would help the rescue etc. as if I was this celebrity?
Hmm..so, for the example you used Jeremy Clarkson and he would be good because of transport etc. So...say if I choose some chef they would be good because of all the yummy food the piggies could get...like that? I know it needs much more ideas than that but is that the basic idea? Or could I just make up someone and decide why they would be good?
I hope I'm making sense lol...I'm probably not, sorry.