A little late on the draw with this one, but hey, it's been a busy week.  When the late night war broke out earlier this year between Conan O'Brien and Jay Leno, there were a lot of question marks about who would go where and end up with what.  However, the one thing we did know for certain was that it would lead to a book from Times columnist Bill Carter, who built his rep on 1995's The Late Shift, the authoritative account of the First Great War after Johnny Carson's retirement from The Tonight Show and the subsequent struggle between the princes of late night -- Leno and David Letterman -- for his crown.  Well, Conan's new TBS talker starts on Monday, and Carter's new book -- The War For Late Night -- hits shelves tomorrow, promising a warts-and-all look at the behind-the-scenes politicking that saw Leno retake his Tonight Show throne, and O'Brien pack his bags for basic cable.  Vanity Fair has provided a fascinating, quite-lengthy excerpt that you can check out here, and after that, you can buy the book here.