I’m often amazed at the issues this series chooses to dramatize as part of its court cases and interpersonal relationships. Tonight’s episode offers another example of almost prescient serendipity: the plot revolves around a legal argument over gay rights. This isn’t ripped from the headlines, Law & Order style – it was written and produced before the current headlines. So be impressed, as Diane (Christine Baranski) defends gay marriage, with both the argument and its topicality.