Dirty Filthy Love is the story of Mark (Sheen), a man afflicted with Obsessive-Compulsive Disorder and Tourette's Syndrome. Nearly destroyed by both his afflictions and a pending divorce, he seeks help from a support group led by Charlotte (Henderson), a fellow sufferer. The quasi-love story that follows details Mark's descent into madness, and his slow rise back to social acceptance, and acceptance of his disorder and himself. The one element which might give one pause, however, is the ignorance of Mark's initial physician at the nature of his disorder; while Mark is first diagnosed with depression, his malady is obviously textbook Tourette's and OCD. Regardless, spectacular acting by Sheen and Henderson, brilliant story.