Check out this great flash animation, The Scale of the Universe, by Fotoshop in his portfolio on NewGrounds.com. Like one of those infinite zoom images, this flash animation lets you zoom from 1x10-35 to 9.3x1026 by dragging the scroll bar across the bottom.
Since I’m visual, that’s from 0.00000000000000000000000000000000001 meters (the Plank Length) up to 930,000,000,000,000,000,000,000,000 meters (the estimated size of the universe).
Found on Forgetomori.com
A dedicated clean-page version is available to see here: http://primaxstudio.com/stuff/scale-of-the-universe.php