A friend of mine pointed me towards this webpage (www.dvdaficionado.com), and I thought it was pretty cool. It allows you to create a list of what DVDs you've purchased, and also make wishlists and stuff like that.
I've put my own collection online here:
http://www.dvdaficionado.com/dvds.html? ... al_dolphin
Unfortunately, I've lent out some of my DVDs, so I'm waiting to get them back before listing them.
Does anyone else have an account? I figure you can learn a lot about someone by looking at their DVD collection