I've started reading George Dyson's “Turing's Cathedral”, and really enjoying it - I love reading the historical context of technological progress, feels like a lot of sociological reading, filling in another of the endless jigsaw pieces of a larger all-encompassing narrative.
Here's George Dyson doing a lecture on the material in the book :
I finished reading James Gleick's The Information tonite - so good!
Really, the central character is Claude Shannon, who I'm ashamed to admit I didn't previously know much about. Had a quick search when i finished it and found this decent little 30 min documentary which gives a good overview -