Digital Bodies
Gallery of artists working on the interface between technology and the body.
http://www.digibodies.org/

The Beall Center for Art + Technology, University of California
The Beall Center features exhibitions by contemporary artists working with emerging technologies. The website offers a calendar of upcoming exhibitions and membership information.
http://beallcenter.uci.edu

Deadtech
An art and tech gallery focusing on installations of robotic, mechantronic, interactive sound/video and network art. All shows documented plus sound projects.
http://www.deadtech.net

Novas Teccnologias Nas Artes Visuais
Brazilian university site chronicling digital art projects and integrated research into visual art technology. (in Portuguese)
http://artecno.ucs.br/