I am still going to disagree, the problem is we have to many "diseases" with wildly varying levels. Would you say I have OCD because I put all my socks in my sock drawer? No, the same you wouldn't say someone has OCD because they want their game cases to match. The problem is, people like being "special" and having something other people don't. People like the idea of having something like OCD because it makes them special or different from other people to allow them to stand out. The only reason for someone to say "I have OCD because I like all my ps3 games in clear cases." is a crying out for attention and they do not have the OCD disorder based on that, they may something else...
I think the term is just highly over used by people wanting attention or by people who just misunderstand what it is. A disorder is something outside of being normal, having ps3 games in matching clear cases is perfectly normal. Arranging games in a certain order be it alphabetical or chronology is again normal behavior. It is not a level 2 of a disorder or anything that would be seen as obsessive or compulsive.
I hate when people (usually young women) point out a small habit that they have and then say "LOL I'm so OCD!"
Anyway (a little off-topic), my copy of Atelier Totori SE just arrived from NIS. The beautiful outer cardboard box that holds the game case and the artbook was in perfect condition. NIS packed the shipping box with paper and wrapped the game and the poster that came with it in bubble wrap. They also threw in a sheet of Disgaea stickers. This was free shipping, btw. That's some classy stuff, NIS.