I've got three on the go atm.
William Bernstein - A Splendid Exchange: How Trade Shaped the World. It's actually a very good piece of narrative history, although Bernstein (as you'd expect from an American financier) is decidedly right-wing. He also has a certain New Worlder's prejudice against the Old, and whilst he rightly emphasises the violence and exploitation inherent in European colonial trade, I very much doubt that the actions of the United States, for example in Latin America, will get the same treatment. I notice also that in his discussion of the first Opium War he neglects to mention that American firms were active in the opium trade, not least of which was Russell & Co, one of whose heads was grandfather of Franklin Roosevelt.
*edit* Finished this yesterday. Chapter 13, dealing with the post-1914 period, is indeed a bit crap, but the last bit is perhaps surprisingly thoughtful and his conclusions aren't as strident and conservative as I expected. Worth a read, IMO.
Roy Moxham - Tea: The Extraordinary Story of the World's Favourite Drink. I picked it up as bog reading, but I'm enjoying it so much I'm reading it right through.
Daphne Glazer - The Wardrobe. Not bad short stories, but I prefer her novels...