For every Oprah, says Michael's regular Jack Kliger, there are scores of over-inflated egos and Hollywood headcases that are deluded into thinking they can run a magazine. "I was getting at least a proposal week," the Hachette honcho recalls of those days when Rosie O'Donnell was still masquerading as "The Queen of Nice" at Rosie. Everyone from Jennifer Lopez to Jane Pauley ("she was talking to everyone") was interested in adding the title of editor-in-chief to their resumes — with no personal investment, of course, he recalls. Long before the 2,000 attendees of Matrix witnessed what seemed like O'Donnell's latest effort at career suicide, Kliger told fellow publishing bigwigs they were crazy to tie their bottom line to the star. "She's a time bomb." No kidding.