Check out this wicked example of video mapping, used on the 600 yr old Astronomical Clock in Prague's Old Town (I've been there! but I wish I'd been able to see this) It was a pretty amazing clock to begin with, but this animation technique takes it to a whole new level
The 600 Years from the macula on Vimeo.
Quoting from the Makula website (translated from Czech):
Video mapping using current technology available in the entertainment industry, a whole new way. The main contents are the projections to cooperate with the selected object and try to break the perception perspective of the viewer. With the projector can fold and stress any shape, line or space. Evocative play of light on the physical object creates a new dimension and changing the view of the seemingly "normal thing". Everything becomes an illusion.