Last week, in my list of things that make me angry, I included 'wars' because war strikes me as the worst manifestation of human stupidity. Film-maker Jeremy Gilley felt the same, and in 1999 he started a campaign called Peace One Day to press the United Nations to declare a day when there would be a global cease-fire and people would think seriously about peace. In fact, the UN already had an International Day of Peace on the third Tuesday every September, but Jeremy convinced all governments at the UN to accept an annual Peace Day on September 21. Of course, you've heard about it through the media. You haven't?

The Day After Peace (BBC2) showed the frustrations that Jeremy met in convincing people to take his idea seriously. He discovered that the media were only interested when celebrities like Angelina Jolie and Jude Law got involved. Eventually he persuaded the conflicting powers in Afghanistan to suspend hostilities on September 21 so that more than a million children in danger areas could be vaccinated against polio. The documentary demonstrated what is possible — as well as the huge impediments in the way of peace. The BBC followed this programme with Mosquito Squadron, a war film.

Mixed messages were also evident in Jamie's Ministry of Food (Channel 4), where Jamie Oliver visited Rotherham and tried to persuade some residents to eat healthily. He was appalled that some of them never had a home-cooked meal but depended on takeaways. Jamie didn't seem to realise that, when you are poor and stressed with work and children, you may not have the time or inclination to rustle up a delightful meal like the stuff they make on TV's posh cookery shows. Jamie still didn't get the message when one woman told him she couldn't afford the bus-fare to go and buy fresh food. He might have offered her some of the money he makes from his restaurants, TV series and books (including the £25 book that goes with this series), but he just remained perplexed. I'm thinking of starting a project called Tony's Ministry of Language, to try to teach Jamie to stop using the 'F' word so frequently. At least he showed us how to cook a pancake — something we seldom learn from television cooks, who seem to prefer scallops, cumin and oregano.

Dawn Porter: Free Lover (Channel 4) started a four-part series from the journalist whose previous programmes have included Dawn Gets Naked and Dawn Goes Lesbian. If these titles suggest that Dawn Porter specialises in soft porn, that's not wide of the mark — except that the first episode was not so much soft as flimsy.

Dawn declared that she is unmarried and would like a relationship, so she started some superficial research into 'polyamory' which is not quite the same as Balamory, since it involves having more than one love partner at a time. Dawn visited the US to meet a "bliss coach" whose husband is "a property investor and a shaman". Then she passed some days at a German free-love commune but spent most of the time giggling and looking shocked.

Natural Born Sellers (ITV1) clearly bases its title on the film Natural Born Killers. But killers often seem nicer than the eight competitors in this 'reality' show, since the contestants are all salespeople, to whom humility is an unknown quality. They compete to make the most profit from selling various things — in the first week, furniture — and, as the commentary reminds us: "In this cut-throat world, there can only be one winner." Does this remind you of anything? Yes, it's ITV's copy of The Apprentice, with boastful people trying to "destroy" one another.

They usually work in such unlovely occupations as telesales, advertising, estate agencies and selling cars. There are occasional diverting moments, as when the store manager tactfully describes a "mature couple" buying furniture: "A very big decision for them — they're probably thinking this will be their last purchase."