I'm not a fan of the bloke, and mentioned at the time that the Labor Party made an awful mistake when they elected him as their leader in 2003, but I picked up a copy of his diaries this week, and they're quite interesting if you're into politics. Some of his entries are crude and sexest, however to focus on this (as the media have universally done) is to totally ignore the book's political substance.
The salutary point about the diaries - and again a point ignored by the media - is that they are not a retrospective attack on the Labor Party or the political system, but entries compiled over a decade. The entries are incredibly consistent in their lament of the problems facing the ALP and the flaws in the political process. There's also a superbly written essay at the beginning of the book, which fleshes out these subjects.