I have the feeling that this has been posted before because the program is a repeat from the middle of last year but there is a short series about maps on the BBC which I have just caught and its on the iplayer now for those of you able to view it. (UK or those able to find a UK based proxy), or some other more dodgy sites etc.

http://www.bbc.co.uk/iplayer/episode..._on_the_World/

Its a great program and cuts right to the chase of map history, some techniques used to make them and their influence. For all those able and who haven't seen it yet then I think its a good investment of an hour.