There are three TV shows (that I know of) dealing with mental illness: United States of Tara deals with multiple personality disorder and Black Box and Homeland both deal with bipolar disorder. I've watched all three.
United States of Tara is a great show. Toni Collette does a great job transitioning between her "alters." She is a wild child teenage girl, a redneck man, and a peppy housewife.
Also read: Trump revels in the secretary of state show