On 1 December 2008, a parade of luminaries appeared on screen in Washington DC to pay video tributes to President George W. Bush on World AIDS day. It was the twilight of his administration, and an obvious time for reflection. But for these people - including former US president Bill Clinton, United Nations secretary-general Ban Ki-moon, rock star Bono and US President-elect Barack Obama - this was not dutiful lip-service. They were heaping praise on Bush's signature programme to fight AIDS, and what many view as his most significant positive achievement of the past eight years.
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