_beauty__ dressed as the Vicomte des Boules-Velues.
ak_mommy81 dressed as Optimus Prime.
anjoganjo dressed as a ghost.
ashale dressed as Sybil - except that Sybil didn't show but the other 30 personalities did.
assie dressed as a third baseman for the Brewers, though it looked more like Spongebob.
bang dressed as a gross zombie.
becky8240 dressed as Brad Pitt.
burningbrightly dressed as Helga the wisewoman, although the live snake was a mistake.
callmemuse328 dressed as a skunk.
crystalfantasie dressed as a J. C. Spoth ServicesInc. employee.
dontspeak dressed as something green, but what, specifically, you can't tell.
eightysix__ dressed as Master Shake.
fictioncoma dressed as Ichabod Crane, the schoolmaster from Sleepy Hollow.
findingjes dressed as Mary Queen of Scots ... without her head. Most convincing.
fluties_flake dressed as a new superhero: Blue Blaze.
frank dressed as Camilla Parker-Bowles when she becomes Queen.
gltrng_clouds dressed as Elizabeth Regina on steroids and roller skates.
imhismrs dressed as blues legend Screamin' Hips Johnson.
kansasmom dressed as the spirit of their dead grandmother Beverly.
kissfirst dressed as the Alternative Power Ranger.
littlestars_s dressed as Chekov from "Star Trek".
lovelikewhoa dressed as Jack the Ripper in a time machine, complete with gory knives.
mommy4life dressed as Tom Cruise.
nyyhoneybee dressed as Ivan the Terrible of Russia.
poison_unspoken dressed as legendary space hero Beat Beefrock.
purple___rain gets drunk, strips naked, and somehow emerges dressed as a squirrel.
southernndolll dressed as Ray Bourque.
terri1980 dressed as Guy Fawkes but the exploding barrel of dynamite didn't go down too well.
tk_1123 gets drunk, strips naked, and somehow emerges dressed as a new member of the Wu-Tang Clan, Respected Beggar.
toxiicdreamss dressed as a Level 9 sorcerer.
warzau_kitten dressed as David Copperfield's mother.
Throw your own party at the Hallomeme!
Created by sigma7: More info here.