My collection is unfortunately a lot smaller than you guy
I want singles so badly (not mainly not from Ayu lol) I only got albums so far...
Ayumi Hamasaki
A BEST - Japanese version/no slipcase
I am... CDA
RAINBOW CDA
MY STORY CD+DVD
(miss)understood CD+DVD
CDL 04-05 DVD
Arena Tour 2005 ~MY STORY~ A DVD
Other
Koda Kumi - BEST ~first things~ 2CD+DVD
Koda Kumi - BEST ~second sessions~ CD+2DVD
Tommy Heavenly6 - Tommy Heavely 6
BoA - BEST OF SOUL CD only
BoA - OUTGROW CD+DVD
Namie Amuro - LOVE enchance SINGLE COLLECTION
Utada Hikaru - disance
Utada Hikaru - Singles Collection volume 1
Utada Hikaru - Ultra Blue
Ken Hirai - utabaka 2CD+DVD
B'z - THE CIRCLE
B'z - Big Machine
B'z - SURVIVE
non-jpop
Avril Lavigne - Under my skin
THE KILLERS - Hot Fuss
Black Eyed Peas - Monkey Business
Black Eyed Peas - Don't Phunk With My Heart single
Maroon 5 - Songs about Jane
+ heaps of Christian and classical CDs
I'll post pictures later