By: Shannon Page Probably best known for her stand-up comedy and satirical roles, Sarah Silverman isn’t the first name that comes to mind when one thinks of serious dramatic actresses – but maybe she should be. Directed by Adam Salky (Dare), I Smile Back stars Silverman as Laney Brooks, a suburban housewife and mother of two.  In between packing lunches and driving the kids to school, Laney’s self-destructive behavior and out-of-control drug use begin to…