"I Smile Back" doesn't quite smile back -- it's a very real, very dark look at just how bad things can get when you're dealing with depression, even when your life may seem perfect. Sarah Silverman stars in her most serious screen role to date, taking her character Laney through the pitfalls of disillusionment and the recklessness that follows. What's your film about, in 140 characters or less?Laney is a wife and devoted mother of two adorable children, but her perfect world is a façade, and reckless compulsion puts it all at risk. Now, what's it REALLY about?Laney, played by the extremely talented Sarah Silverman, is an attractive, intelligent woman who is tormented by some very complex personal demons.