Every night from 1964-1972 this celebrated, controversial series presented a daily review of television and the contemporary arts. Now, 14 years on, it returns, for this week only, with four of the original presenters Joan Bakewell, Denis Tuohy, Michael Dean, Tony Bilbow. Each evening they and guests celebrate BBC television's golden anniversary and give a critical view of life on and off 'the box' in 1986.