Bookshelf

Show off your bookshelf. Borrow a game from a friend. Share your movies with your dorm. Bookshelf lets you list, share, and search your books, movies, music and games with people around you.

There are lots of apps for organizing your Bookshelf, but this seems to be the only one which organizes Books, CDs, and DVDs - and according to Read/WriteWeb, it's the best one overall. But it'll only really be the best once we've incorporated all your suggestions, so keep 'em coming!

If you have a feature request, check the discussion board - if it's not there, add it, and if it is there, comment on it with either an "I want this too" or (better yet) clarification of how you'd like the feature to work/why you want the feature.