Mamet Versus Mamet

As a connoisseur of pissing matches large and small, David Mamet must be amused by the offstage drama that surrounds the two dueling Mamet revivals opening on Broadway this fall. Producers of the two shows — “Speed-the-Plow,” which opens October 23, and “American Buffalo,” which opens November 17 — both went after the same theater, the Ethel Barrymore on West 47th Street, after it was made available by the cancellation of “Godspell.” When “American Buffalo” lost out, the New York Post described…