The Analytical Engine, Circle Theater, through March 28. Jon Steinhagen’s new romantic comedy may be old-fashioned, but it’s delightfully so. Everything about this Victorian period piece about computer dating (!) is also lovely to look at. SCM

Dancing at Lughnasa, Seanachaí Theatre at the Irish-American Heritage Center, through April 4. St. Patrick’s Day may be over, but the building has a pub downstairs, and upstairs is the Seanachaí company’s intimately convivial production of the popular Brian Friel play. MSB

Master Harold and the Boys, TimeLine Theatre, through March 27. South Africa, 1950. Will teenage Hallie become a white racist like his father? Or will he absorb the wisdom of his older Black servant? Athol Fugard’s exquisite play examines a nation’s soul. JA

The Rant, Mary Arrchie Theatre Company at Angel Island, through March 28. Director Sharon Evans creates a gritty moral murder mystery that reveals the shades of gray within a justice system we’d all prefer to believe dealt in black and white moral absolutes. As police procedurals go, this one’s both wholly compelling and disturbingly realistic. CS

—By Abarbanel, Barnidge,

Morgan and Sullivan