I know, I know: What was I thinking? Well, 21 years ago, Larry Kasdan directed and with wife Meg co-wrote one of my favorite movies of the 90s, the L.A. ensemble piece "Grand Canyon." Two decades later, they've collaborated on "Darling Companion," a movie of jaw-dropping insubstantiality that, to my pleasant surprise, played last night to an audience of one. (I got to recite the pre-show spiel about talking, texting and parking validation.)
