Over the last few years, I've noticed a subgenre of reality television shows: several of them feature individuals diagnosed with specific mental illnesses. Obsessed on A&E features individuals with Obsessive Compulsive Disorder (OCD):
Hoarders on A&E and Hoarding: Buried Alive on TLC both feature individuals who have what might be considered a subtype or symptom of OCD or Obsessive-Compulsive Personality Disorder.