A programme which has grown from a 'me too ' show with builders trying too hard to be comedians into a kind of national institution. This trick was achieved by going large and, above all, finding a genuine heart. I used to watch Extreme Makeover - Home Edition to which this show obviously owes a debt. It was OK, but devalued by commercialism and constant product placement. The tradespeople were celebrated less than their companies, self interest confused with philanthropy, and too often the show seemed all about the designers and visiting celebrities over-emoting. By contrast DIY SOS concentrates on the people being helped and the ordinary people giving their own precious time and hard work. I've lost count of the number of times Nick Knowles (whose empathy has grown over the years) has told a grateful family member, 'Thank the volunteers, not us.' Donating companies remain anonymous. The regular stars have greatly dialled down the staged comedy, and any jeapordy is genuine. Not many reality shows are in any way real