Rhinoceros (Paul Giamatti, John Turturro, Tatiana Maslany)
The American Repertory Theater stages Ionesco’s absurdist classic at the Loeb Drama Center in Harvard Square, and the occasion is a big one: Diane Paulus directs her last production in the building before the company decamps to its new Allston home. John Turturro plays Berenger, the lone holdout in a town whose citizens keep turning…