Muggle born

Alright...I'm seriously geeking out over Harry Potter.  With everyone all abuzz and the store getting decorated, I've jumped on the Harry Potter high.  Plus, I'm seriously excited to read book 6!  My true geekiness showed today when I made a 'muggle' stencil so that I paint a
shirt for tonight.  Another confession...I'm thinking of buying a Camelpack to wear my sf red bull all night.
Any predictions about book 6?  I've got a few theories but have been following any of the blogosphere gossip, so I don't know what the popular theories are.