Interview with Director of the Willow Sweater CAVE Music Video, Filip Sterckx
Interesting article on using CAVEs for 3D projections: http://www.roadtovr.com/filip-sterckx-interview-willow-sweater-music-video-cave/
The music video can be found here: http://www.youtube.com/watch?v=cl8ptneR1Kk
Another piece of art can be found here: http://vimeo.com/54434609
Nike also did a 3D projection based system: http://vimeo.com/42464673
Finally, here is a new ride at Epcot that uses 3D projections: http://www.youtube.com/watch?v=XkyGsLqjJHU