SeeSaw, a new online video-on-demand service, has just launched.  It offers more than 3,000 hours of programming, including full catch-up services from  Channel 4 and Five, and archive content from these broadcasters as well as BBC Worldwide. The service is free and funded by advertising, but a pay-per-view service will follow, requiring micropayments for viewing a further 2,000 hours of both US and premium British shows. Content is organised by category – comedy, drama, factual, lifestyle, entertainment, sport – and current offerings include complete series of The Human Face, The Trials of Life, Amazon Abyss, Extinct, Time Team, Anatomy for Beginners, and Brits who made the Modern World. The service is provided by Arquiva using technology acquired from the abandoned Project Kangaroo multi-broadcaster collaboration that was blocked by the Competition Commission in 2009. To access Seesaw, visit: www.seesaw.com/