Thing 11 - LibraryThing

I had heard of this before. We explored it during my cataloging class but I didn't try it. I did put in a few of my favorite titles now (http://www.librarything.com/catalog.php?view=fjack&shelf=list) even though I don't actually have the books at home. (So I will probably go back later to remove them and unsubscribe.) I don't buy or keep books since the library can store them for me. Now, what I need is something like this to keep track of all of our DVD's. Does anyone know of a site like that?