With Lars and the Real Girl set to open in various markets over the next few weeks--it's the buzzed-about Ryan Gosling film about a lonely misfit deluded into thinking he's fallen in love with a mail-order silicone sex doll--producers are facing a marketing challenge: Sure, the concept alone might sell tickets to a built-in, RealDoll-enthusiast audience, who'll arrive opening night with high hopes of cheerleading costumes and raunchy, multi-doll orgies. But how to get the rest of America to...