I know this won't be popular, but I would prefer Alex to win BB3 - and no, before you ask Oldgit, I don't fancy him!
I like Alex, Jonny and Kate, but I think Alex is by far the most interesting character and I find his eccentric ways very amusing and I would love him to win.
If Alex doesn't win, Jonny would be my second choice as I think he is a genuinely nice guy.
It would be nice if a girl won, but even though I do like Kate she doesn't have much of a spark, and I don't think she has a big enough character to win.
If Jade wins I think I'll emigrate.