Social misfit or 21st-century icon of cool? The geek is sometimes ridiculed, sometimes celebrated, but often behind the latest developments in science and technology. Sweeping back through the centuries, this playful exhibition picks out geeky enterprise from 1980s home computing all the way back to medieval astronomical gadgets. Was Chaucer a geek? And with our screen-based, computer-driven lifestyles are we all geeks now?