Online dictionary with a twist

Sometimes, you're looking up a word in a dictionary to be sure you spell it correctly. Online dictionaries haven't been much help in that area for me. However, I recently came across the ObjectGraph Dictionary which is ideal to use when you're not positive how the word is spelled.

It does this by immediately feeding you results with the first letter you type. As you type additional letters, the results change to match. Basically, you can skim the dictionary, just as you would in hardcopy. Fun!