We’ve got your front yard and we’re not giving it back. An artist transforms America’s lawns, one vegetable garden at a time. What can America’s suburbs learn from the shantytowns of Tijuana? Architect Teddy Cruz has an answer. And Diane Keaton obsesses over an obscure photographer. Plus, we’ll hear about two Tony-nominated musicals shaking up Broadway: “Sunday in the Park with George” and “Passing Strange.”