Dead Man's Cell Phone, a play by Sarah Ruhl. Playwrights Horizons, starring Mary Louise Parker and Kathleen Chalfant, directed by Anne Bogart. This is the third play we've seen by the young genius of a playwright, Sarah Ruhl. Compared to "Eurydice" (a modern masterpiece that is already playing all over the country - in fact it's being done at Princeton this week as a student thesis), and "The Clean House", we found "Dead Man's Cell Phone" slightly uneven. At its considerable best it's a comic metaphysical meditation on the ubiquity and absurdity of life in the cell phone era, and a romantic story that transcends time and space. These are weighty themes that are mixed in with the absurdest hijinks's for which Sarah Ruhl is celebrated. But the conclusion felt rushed, the bits with a BBQ and a karate fight each landed like a thud. But these were the exceptions in an otherwise charming and witty, and very thoughtfully observed play that featured an amazing monologue by T. Ryder Smith (the dead man) and a vintage performance by the great Mary Louise Parker. With a little work, this lovely tragic comic romance could be another masterpiece. Even short of that, it's a must see in the growing repertory of one of America's most original young playwrights. Broadway Bridge and Tunnel Test A-