Here’s a list from Beeker and myself of visual data, collected by all of us here at glue:
Presidential Watch ’08
The brilliant book, “Mapping”
Napoleon’s march to Moscow
Sergey Brin and Larry Page on Google
ILOG org chart
ILOG 3D chart
We Feel Fine
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!