Gee, and I thought I was the only one who plans way in advance, LOL
Last year I planned my Joker costume in May, before the Dark Knight came out, and this year I started my Ghostbuster costume complete w/ proton pack - which I started to construct in July and took me months to construct BTW, but the easiest was the actual costume itself, that took about a week or 2, w/the flightsuit, boots, web ammo belt, "No Ghost" logo, custom home-made name tag, and elbow pads - so I'm gonna do the whole GB route next year; just need to "update" my Proton Pack w/ better lights, an accurate bumper, particle thrower AKA Nuetrino Wand, and better cyclotron
Plus I can wear it to conventions and whatnot other times as well!