Also, don't forget that any Ayumi Hamasaki DVD is region 2. That means that you can only play it on a DVD player that is either multi-region or specified for region 2 DVD's. However, there are ways to get around that, I think for PS2, there is some sort of thing you can do to it to play other region DVD's. I really don't know much about those type of things since I don't buy Region 2 DVD's (yet, anyway) Perhaps someone else on the forum would care to enlighten you on this subject
However, not every j-pop DVD is region 2, Hikaru Utada DVD's are multi-region! I just bought UH Clips 3.