For a recent segment on his CNN show 360, Anderson Cooper spends a day wearing a "schizophrenia simulator"—basically headphones that mimic what it's like to hear voices constantly in your head. The voices, which vary between being very negative and somewhat positive, make it extremely challenging for the normally very smart and level-headed Cooper, who at times just seems to be barely holding it together. This is not only an extremely interesting experiment, it's simultaneously creepy and heartbreaking. Watch.