Though Michelle Williams got her start on a show geared towards teenagers, she's built her already-illustrious career with serious roles that largely been far from family friendly.To score her first Oscar nomination, Williams co-starred in the gritty, high-profile closeted gay cowboy feature, "Brokeback Mountain." Then, a string of dramas, such as "The Hottest State," "Incendiary," "Deception," "Wendy and Lucy," and "Synecdoche, New York," all of which earned R ratings from the MPAA.