An additional reason for any of you to try out the Gumshoe games published by Pelgrane Press is their PDF Download Guarantee
Put simply, if you buy a hard copy book from them, you get a digital copy for free. If you buy a hard copy book from one of their associated stores, you get a digital copy for free. If you buy a hard copy book from Amazon et al, then ask them, and they'll give you a digital copy of the books bought to date for free, with the understanding that any future digital copies will only be provided if you buy through the agreed channels.
As a result of this sweet deal, I am now in possession of PDFs of Trail of Cthulhu, The Esoterrorists and Fear Itself. I bought these three books separately through Amazon UK, so am incredibly pleased to get the digital copies as well.
I share because I think its a great offer, and would encourage more people to explore Gumshoe.