Google Zeitgeist 2011 has some awesome 3D HTML5 Diagrams

I still can't really interpret them easily though even after looking at them on separate occasions, they still don't make any sense to me without really thinking.

I guess I'd rather see a line graph for each in a different colour with time on the x-axis - as it is I can't get it in my head which column is which, and it's really hard to get a feeling for how they change in relationship to each other over time.

Also, they aren't really that HTML5y, they are made up from a sprite sheet: http://www.googlezeitgeist.com/img/graphs/toplists/spriteshe..., so aren't being rendered using CSS transforms, canvas or SVG. Also, the developer hasn't rounded things properly, so you get things like heights being set as 147.75700934579436px. It's not exactly a problem, but this could have been handled in the JS.

Other than that though, they do look nice.

Technically impressive, but horrible at being charts. The depth and angle make it very difficult to compare heights.

Awesome technically. Horrible in design.

Seems not working on iPad