So this might give you nightmares but the hair/wig is pretty nifty.
Day of the dead makeup and hair
DIY gorgeous Geisha hair for Halloween? It's possible! http://www.latest-hairstyles.com/trends/halloween-hair-ideas.html
Pin-up girl style :)
An enormously crimped beehive hairstyle...do NOT attempt this style alone!
Grease inspired :)
Lady Gaga looking rather ghoulish ;)