I love to organize things. Not everything, mind you. Just the things I'm interested in...at the moment. Thankfully, I'm always interested in wine, so my wine collection is usually "in order". Now if you ever have more than a few bottles of wine laying around the house, do yourself a favor and organize them so you can easily decide which one you want to:
a) have with dinner
b) bring as a hostess gift
c) drown your sorrows in after a hard day.
One of WineEnthusiast.com's blogs offers many good options demonstrating there isn't one "right" way to organize your cellar (or in my case, the corner of my garage).
For what it's worth, I tend to separate red and white as a starting point, then sort by either varietal or region or sometimes both. Since I tend to keep a relatively small but varied stock of wines, my organizational structure will depend on the current mix.
If this post makes you want to go out and buy a bunch of wine just so you can organize it, you are not alone.