Michael Lerner
'Two Unrelated Plays by David Mamet'

When you've been crowned the heavyweight playwriting champion of trash-talking masculinity, it can be hard to get anyone to acknowledge that you're good for more than just verbal uppercuts. David Mamet's talent has always been more diverse than his reputation. No, there definitely isn't an old softy waiting to emerge from behind the brawler's facade. But what about a bespectacled metaphysician with an absurdist streak or a vaudevillian cutup who could still probably make a killing in late-night sketch comedy? These two lesser-known sides are on jaunty display in "Two Unrelated Plays by David Mamet," a bill featuring his 1971 two-hander "The Duck...