Visualizing LibraryThing

Man, what will they think of next? The new "visualization site", Many Eyes (which looks like a whole lot of fun, I'll have to play with it some more) is currently featuring "Harry Potter is Freaking Popular," which shows the top fifty books currently listed in LibraryThing. I like the capabilities this has, including snapshot view in comments (i.e. you can select multiple 'bubbles' using 'control + click' and have it show up, to make a point or just indicate which of the titles you've read). Pretty cool. As Tim points out, the possibilities for LT data + Many Eyes visualizers are (probably) endless.