http://vimeo.com/29670498 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)

http://www.youtube.com/watch?v=kfVR02mpdPk Piotr Chlipalski:
Here’s a little architectural mapping made entirely in Blender 2.61, internal render. We’ve had quite a little time for this, so excuse what shall be excused, and once again thanks for the last-minute borrowings to Erik Castillo (hand model), Greg Zaal (tank model) and Witold Jaworski (airplane model), they saved me when the time window started closing rapidly =)