Ready to carve your pumpkin just in time to put it on the porch before the trick or treaters show up? Then perhaps these 14 great geeky pumpkins on Make Us Of can provide you with a good source of inspiration. They have everything from comic book characters to Minecraft creepers to the Death Star blowing up. I'm a particularly big fan of this Guy Fawkes pumpkin that would make any member of Annonymous proud.
Of course, if you aren't much of an artist (I'm not either) then perhaps a V like the one from V is for Vendetta would be a little easier.