Courtesy Gina Trapani

The Roomba's new serial interface lets you use the little vacuum for any robotics task you like, controllable through preprogrammed instructions or over Bluetooth from a laptop. We wrote about some 'bots you could make with this in the January issue's How 2.0 section, but the obvious outcome was finally realized last night at ETech: Roomba cockfighting. More photos as well as videos (including some from the Roomba's point of view) here.

—Mike Haney