This is really great! For those interested, another book on the way is: http://www.sci.brooklyn.cuny.edu/~noson/MCtext.html. I've read Noson's other book on Quantum Computing and it was really clear, with lot's of examples.
Yeah the other book is very sweet and accesible, and quantum computing is very amenable to the monoidal category treatment as Coecke shows pleasantly in 'Picturing Quantum Processes', 110710422X.
