The welcoming speech at a Tank production usually stresses the reach of the organization. The audience is typically informed that the Tank produced more than 1,000 productions last year. It’s impossible that all of them would be home runs, of course, and yet even those with modest virtues may be worth noting. Such is the case with Johnny G. Lloyd’s Or, An Astronaut Play, an amusing sketch of a play enhanced by very good performances, as well as the author’s intelligence and sly wit.