A glimpse of the Harwell Dekatron / WITCH bursting back into life at The National Museum of Computing on 20 November 2012. The machine - the world's oldest original working digital computer - can be seen at TNMOC, located on Bletchley Park, Buckinghamshire, UK. Opening times: http://www.tnmoc.org/visitLots
more videos of the event to come, so do subscribe to the TNMOC channel.
Video by TVUK for TNMOC and kindly sponsored by Google UK.