Freeset are based in New York & Quebec. They have created some very innovative interactive electronic objects and programs that will appeal to the cereberal music lovers out there. Thery also make some very nice websites (try the excellent Moco Loco), custom logos, games and other web based projects.
Take a look at this series of tables they have installed into nightclubs:
Human Locator
and be sure to explore Invivo and Groove Grave at the Freeset site.
