Brilliant but difficult to read. Dourish presents a model for a new approach to the science of interaction, that he calls Embodied Interaction. The most interesting is the different perspectives brought, mainly the phenomenological ones, to design the framework.
The problem, and that's why the book became so difficult to read, is that Dourish tried to work a model that would serve any kind of interaction. This took him to elevate the discourse unto a very high level of abstraction.
Anyhow, a relevant book for any academic working with interaction sciences.