Keeping track of lifestyle trends in the decade that style forgot was one of BBC Two's bigger challenges, as the deliciously arch narration of Bake Off's Mel Giedroyc reminds us in this amusing romp through the channel's archive.This, after all, was an era of dodgy fashion, stodgy food and bodged politics that had us running to escape into a world of stripped pine, country kitchens and Laura Ashley. But the programme shows that the 1970s also resemble our own times - from house price inflation and soaring energy costs through to worries about the threat to 'real' food and environmental sustainability.