It seemed the cliche costume for Freakfest 2007 involved minimal effort.  Step 1:  Cut a hole in a box...oh, you know the rest. 

Coming in second is a close tie between guys dressed as kegs, "mammogram machines" (sans credentials) and Jack Sparrow. There were not as many Harry Potters or rainbow flag waving Dumbledore's as one would expect, but they made an appearance.

Six guys thought it was a good idea to wear coconut bras and hula skirts to patrol State Street Saturday. Also spotted were "Barack Obama" flanked by "security," two mattresses with heads, several Michael Vicks and human Q-tips.

Many of the ladies followed the "Mean Girls" mantra (apparently the satirical nature of the movie was lost on them) and vamped it up. Sexy nurses, maids, whatever, were in abundance.

Most entertaining costume: Two guys dressed as bananas, with a hammock between them.  Instant banana hammock.