Just got back from Chara Hobby 2007. If you have just changed your underpants then you will need bleach for your next pair to remove the new skid marks - Gundam Unicorn.
I dont know much about Gundam Unicorn apart from the fact that its a novel. I personally prefer the designs for Unicorn over Gundam 00 and have been wondering if they will ever bring out models of the Unicorn series.