Never judge a book by its cover, or, apparently, a playwright by his prior works. This certainly applies to playwright Ronnie Larsen, whose oeuvre includes such titles as An Evening with John Wayne Gacy Jr., Making Porn, and Cocksucker: A Love Story. A niche collection for a niche audience, to be sure. But now there's The Actors, opening tonight at Theatre Row. It is, surprisingly, a genial sitcom with a big heart, f…
