Words cut like a knife in Mary-Arrchie's 'Uncle Bob'
When the lights go up on "Uncle Bob," Austin Pendleton's treatise on loneliness, failure and tenuous redemption, the audience is introduced to the title character with a subtle nod to Samuel Beckett's "Krapp's Last Tape." Only instead of listening to a taped recording of the details of his life, Bob talks and talks and talks trying to make sense of a life lived unfulfilled. A failed writer and actor, Bob (Richard Cot…