Carlos Padial reported about recent performance art project where Blender was used in 3D content generation for a large scale projection mapping project in Barcelona.
I had been working in a projection mapping on the facade of Barcelona City Council during Mercè' 11 Festival (Festes de la Mercè, September 2011) Blender was used along with 3dMax, Maya and After effects.
All 3d stuff in the video games scene was modeled and animated with blender, also some backgrounds and even some dinamic painting to simulate the wet from the rain (10:30, but hard to appreciate)
You can see liero's 3d Pix script in action in the videogames scene (the pacman, 7:20)
I also used blender to make some fast compo setups with audio sync for the running painters scene (01:10) before to recompose it in AE (workflow mandatory circumstances ;P)
There is another show where we used blender, a performance of the Swan Lake Ballet, also with projection mapping over a fountain, where at least 3 scenes were made using Blender. Blender was also helpfull managing pointclouds (along with meshlab) and fixing model issues (specially with the Ciutadella Font model)
Here are two other movies the first a zoom shot and the second a wide angle shot of the performance. At 7:30 you can see the 3D part seen from a distance.