With Peter Jackson's The Hobbit: An Unexpected Journey on the horizon, it may be a good idea to brush up on your LOTR knowledge. Thankfully, the Lord of the Rings Family Project (via Geekologie) will help you do just that. The team behind this project has an insane amount of knowledge and time on their hands.
Click here to check out the massive family tree! I like the idea of an online family tree like this. Our family actually has a book, which is kinda cool. Have you ever wanted to research your family history? If so, would you go to this length?