Has Demi Gone Crazy?

Sonny With A Chance of going absolutely freakin' bonkers.
In the clip below (a preview of an upcoming Grey's Anatomy episode called "Shiny Happy People"), you'll see a whoooole different Demi Lovato than you've come know and love: The actress plays a paranoid schizophrenic girl who is so nuts and tries to claws her eyes out!
The episode airs next Thursday, and we already can't wait for it.