A colleague of mine, Jude Kastens at the Kansas Biological Survey, forwarded this link to me:
Scales of the Universe — http://htwins.net/scale2/scale2.swf?bordercolor=white&fb_source=message
This site is WAY COOL! How big is a string? How big is a nebula? How big is a beach ball? You can zoom your way from from 10^-35 meters to 10^27 meters in a Limitless meets Contact sort of google earthy experience.
I wish I had seen this earlier in the year!