Let the Spirits Move Me

So I started to think about what I would like to be for Halloween. While I should have started planning weeks ago, life interrupted and now I'm down to two weeks to plan and execute a costume. And the problem is I'm stuck as to what creature of the night to possess for All Hallows Eve (my favorite holiday.) So, I'm looking to you dear readers for some suggestions. Be creative. The only thing I suggest staying away from is anything too obvious - vampire, doctor, pirate or Paris Hilton. You get the idea.