Halloween Costume Ideas?

Does anyone have any interesting Halloween Costume Ideas?
Suggest your own (post a comment) or vote on which of the following you like best!
I'm trying to keep it cheap and easy: no over-achievers!

Here's a few I've found online or come up with that have some promise:

* Nurse (buy scrubs, get stethescope?)
* Super-Fan (ND apparel overload, foam finger, rally beads, temporary tatoos, sport horn - I'm mostly excited about the sport horn!)
* Mime (white face with stars over eyes, black pants / shirt)
* Go as a Die (singular of 'dice' - cardboard box painted like a die).
* Lame Excuse (Write various excuses on Post-It Notes, attach them to your body and walk around with a cane).
* Greek Goddess (white sheet(s): Think Toga, fake vine & grapes (for crown), white shirt, safety pins, gaudy, greek-looking jewelry or clay pot (to put candy or figs in).

Others?