Haha, I've already decided. Being the pokenerd that I am, I'd decided in advance that I wanted to go as a pokemon for '09. I chose Ninetales because she's my favorite. I've already begun construction of the head (since it'll be a fursuit: my first attempt at crafting one). Hopefully I'll get it done in time so I can romp around Otakon as my favorite pokemon, haha!
I'm hoping to get my Hyper Police costume done for this year. I tried my best to gather all the needed pieces and accessories for Otakon '07, but failed misserably. Hopefully, I'll be able to pull it off for '08. If so, I'll definitely be going as Sakura from Hyper Police, as she's my favorite character, and I just can't pass up the chance to walk around wearing 9 fox tails!