Some Oscar presenters back out

Names anonymous this year due to revamped telecast

Anonymity has its perks -- especially for celebrity Oscar presenters who might need to wriggle out of the gig.

At least some of the presenters who'd been lined up for Sunday's Academy Awards show have backed out, said Bruce Vilanch, who is at work writing the revamped telecast.

Rookie Oscars producers Laurence Mark and Bill Condon have promised sweeping changes. But they've also been careful to keep many details under wraps -- in particular the identity of presenters, many of whom won't be seen on the red carpet.

Celebrity presenters have been a large part of the show's pre-publicity campaign in the past, but Vilanch says that because they've been kept anonymous, there's no disincentive for them to back out -- and some have.