Is the the ultimate geek mashup or what? Emil Johansson has sorted and categorized 114 characters of J.R.R. Tolkien's world and arranged them in the style of the periodic table of the elements. Each has a number, symbol, birth and death dates, and other information as necessary. Lord of the Rings is such an epic tale that you need a program to keep track of the participants, and this table makes a handy short form for that purpose. See the full size table at LotrProject. Link
Emil Johansson also created the Lord of the Rings Family Tree, the Middle-Earth Problem Solving Chart, and the Timeline Of The One Ring.