(previews start on May 22; opens on May 23) Please take your seats, but be warned that you might just be sitting on Stephen Hawking, Nelson Mandela or another influential figure when the puppeteer Theodora Skipitares adapts Eugene Ionesco's dark comedy at La MaMa. The Living Theater's Judith Malina, doubled by a 10-foot-tall puppet, stars as an old woman expounding on the meaning of life while surrounded by humanoid chairs.