Reviewed by David Rooney
While the dry martinis flow freely among hosts and guests alike in <cite>Blithe Spirit</cite>, those libations do little to loosen up Michael Blakemore's classy but stiff Broadway revival. There are sparkling moments, thanks mostly to the light touch of the sublime Jayne Atkinson and the comedic life-force of Angela Lansbury because she's, well, Angela Lansbury. But overall this is a wispy ectoplasm of the 1941 Noel …