"Panorama" is the BBC's flagship current affairs programme, featuring investigative reports on a wide range of subjects. It premiered on BBC One in 1953 and the show's regular presenters have included Richard Dimbleby, Robin Day, David Dimbleby and Jeremy Vine. At one time the programme offered a mix of reports both light and shade, and notably tried to pull off a report about spaghetti crops in Switzerland on April Fool's Day 1957. The arrival of the magazine programme "Nationwide" in 1969 removed the need to be quite so wide-ranging in its approach and "Panorama" became a much more serious affair, remaining so after the demise of its more light-hearted sibling. Notable episodes include Martin Bashir's 1995 interview of Diana, Princess of Wales, allegations of corruption at FIFA, which was broadcast three days before the result of the bidding process for the 2018 and 2022 World Cups, and an investigation in 2011 into physical and psychological abuse suffered by people with learning difficulties at a private hospital in Bristol. In 2007, the programme's report into the ethics of scientology bore one of its more extraordinary moments when reporter John Sweeney suffered a temper tantrum while pursuing follower Tommy Davis.