BLACK SWAN (Darren Aronofsky, 2010)
Aronofsky never properly shepherds you into his heroine's mind, since there is no such thing to speak of: psychologically Nina never coheres into anything beyond a conglomerate of crazy-virgin-horror tropes. So, in the figurative sense - never mind the literal - he never seriously gets under Nina's skin.
The point is, he gets under yours. This is crazy virgin horror like you've never seen before (and you may never organically see again): strung out to a disarmingly earnest pitch of absurd, unhinged hysteria. Even more than Nina, you feel like you're riding along an unfathomably nasty precipice. It's exhilarating.