Fifty years ago Shirley MacLaine was doing adorable-pixie roles in movies like Irma La Douce and What a Way to Go! and Christopher Plummer was, well, the Captain in The Sound of Music. Both actors are doing just about the same thing in Elsa & Fred. She’s still an unstoppable force of life, and he’s still moping around the house. MacLaine doesn’t break into a chorus of “My Favorite Things” to shake him out of his doldrums, but she does insist that they re-create the fountain-jumping scene from La Dolce Vita. Which is not a bad way for an old curmudgeon to get his mojo back, it turns out.