Gotta acknowledge the ever-terrific Ian Visits for this one. David Attenborough, who must rank in the top two most talented Attenboroughs of all time, will be signing copies of his Life on Air book at Waterstones Kensington tonight. With the exception of Stephen Fry (and, dare we say it, Girls Aloud?) few people in the public eye are so universally admired. The book signing takes place from 6 till 7, but get there as early as you can to meet this most popular of knights.