The Open University was founded in 1971 in the "white heat" of the communications revolution. Late-night lectures delivered over the television would revolutionise education - but they quickly became a much-loved/much-mocked UK icon, ideal for insomniacs (it was all that was on telly at that time of night), and replete with kipper ties, beards and Periodic tables. They also helped to inspire some affectionate piss takes and spoofs. This weekend the OU will broadcast its last ever TV documentary - from now on they will be sticking to DVDs and the internet. Last link goes to embedded BBC News video.