Any idea which book called "Influence" Justin was talking about? Looks like there is more than one: http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Dap....
http://www.amazon.com/Shogun-James-Clavell/dp/0440178002/ref...
Highly recommended.
Perhaps I should put my own referral link in ;)