It's hard to imagine anyone so wonderfully inhabiting the roles of Edith Bouvier Beale (Act One) and "Little" Edie Beale (Act Two) as Tony winner Christine Ebersole did in both the Off-Broadway and subsequent Broadway production of Grey Gardens. Yet, had the musical come along a few decades earlier, we think five-time Tony winner Angela Lansbury would have been an exquisitely dotty "Little" Edie and an equally enchanting Edith. Just one question: Who would have been Edith to Lansbury's "Little" Edie in the musical's second act?