"Rain Room" is an installation where artificial rain is falling from the ceiling throughout the room, but when the viewer steps into the rain, a gap opens up around them so that they remain dry. The effect is achieved with cameras that track the 3D location of the viewers.
The sheer size of the installation and the power of the interaction with it is bound to create a strong effect. While I can't really experience it from behind my computer screen, even imagining what it would feel like to be in that room is affecting: being surrounded by the rain but not being able to touch it, the frustration of hanging a carrot in front of your face. Also realizing the imaginary experience of being in the middle of the rain and staying dry is cool in itself.