The best one-man shows are those that make you forget that only one person is up on that stage. It takes an enormous talent to fill a theatre so completely that you feel the force of a whole company entertaining you with their stories. The last time (maybe only other time?) I felt like a stage was filled with several great entertainers instead of just one was in Michael Urie’s brilliant one-man show Buyer and Cellar. Now the wonderful Laura Linney manages to achieve a similar result in The Bridge Theatre’s “My Name is Lucy Barton”, in which she tells her story so vividly and describes other people so keenly that it feels as effective as a play with a big ensemble. She distracts you from how hard she’s working up there with how realistic her storytelling is. Directed by Richard Eyre, this moving tale of one woman's struggles to come to terms with her past while recognizing her internal pain is at times funny, depressing, and surprisingly universal in its representation of the humanity of loneliness.