Jim Driscoll and Dana Moss-Peterson in Death of a SalesmanThe Richmond Hill Barn Theatre's Death of a Salesman marks one of James Driscoll's most powerful, effective, fully realized performances to date, which is saying a lot given the actor's résumé, which includes roles such as Long John Silver in the Playcrafters Barn Theatre's Treasure Island and his multiple characters in last year's Anton in Show Business for New Ground Theatre. During Friday's presentation, I was awed by Driscoll's ability to shift from sanity to a mental confusion bordering on insanity as his Willy Loman transitioned from his vision of his past to a moment in the present. Driscoll accomplishes this both through physical gestures, such as rubbing his head as if sweating, and vocal inflection, as his voice becomes more frantic and emotional during his state of confusion.