In my college dorm (From left to right)
BoA Kwon - Poster I got for free (after a refund)
Ayumi Hamasaki - ~All Singles~ Poster
Koda Kumi - Kingdom
BoA Kwon - BEST&USA
Girls Generation - Free with the purchase of the middle 3
On my home-office wall, the original page 3 from Conan The Barbarian issue #183 (June, 1986) penciled by John Buscema and inked by Ernie Chan. I own several original comic pages and covers, but this is by far my favorite. I've yet to properly frame it, I just bought the closest frame that sort-of fit, but eventually I'll properly frame it.
My 1st Cousin designs a ton of rock posters for some pretty big bands, check out his website http://www.gigart.com. Guarantee almost every one has seen his work somewhere in their lives, I have this hanging in my Apt bedroom personalized to me.