October 27, 2006 lecture by Andy Wilson for the Stanford University Human Computer Interaction Seminar (CS547). Andy presents a series of projects which exploit sensing technologies such as computer vision to enable a wide variety of fluid, natural interactions situated on walls and tabletop surfaces. CS 547 | Human-Computer Interaction Seminar: http://hci.stanford.edu/seminar/ Stanford HCI Group: http://hci.stanford.edu/ Stanford Center for Professional Development: http://scpd.stanford.edu/ Stanford University Channel on YouTube: http://www.youtube.com/stanforduniversity/