Former US President Bill Clinton will be a guest on the Late Show With David Letterman on Tuesday 22nd September. It will be a year since his last visit (exactly a year – his last appearance was on the 22nd September 2008). Dave will be discussing the 2009 Clinton Global Initiative annual meeting with the former President. Thanks to the official Late Show Facebook page for the tip-off. Bill Clinton will be on the show one day after current US President Barack Obama is a guest.