Here’s a list from Beeker and myself of visual data, collected by all of us here at glue:
radiohead-first-ever-bitcast
Healthmap
Presidential Watch ‘08
Biomapping
The brilliant book, “Mapping”
Napoleon’s march to Moscow
flight patterns
immersive-workspaces
Sergey Brin and Larry Page on Google
ILOG org chart
ILOG 3D chart
visual digg
flashtalking
Facebook friendwheel
movie charts
We Feel Fine
Lev Manovich
The Dumpster
infosthetics
Dopplr
Visual Complexity
Bestiario
Flare data visualisation library
Tom Carden’s tube map
Faber Finds book covers by my mate Karsten Schmidt (Toxi) from Postspectacular

Also, a great presentation on the subject here.

Sure there are MANY more examples – if you think of any, please post away!