“The art of experimental interaction design” is a great book to have if you want to see some of the best interaction projects that merge and question the physical, interactive, and interface world together. The book contains projects by ideo, antenna design, daniel rozin, golan levin, and many others. It also includes a CD documenting several of the books projects. I’ve had a hard time finding great books dealing with the physicality in interaction design and electronics, but here it is. Most interaction books only cover interfaces and rarely bridge back to the physical world. I’ve had this book for about a year, and it’s been an everlasting source of inspiration.