(YouTube link)
This is astonishing. Japanese company Kajima Corporation is using a building demolition method called daruma-otoshi in which they replace the support columns on the bottom floor with huge computer-controlled jacks. They dismantle the entire bottom floor, then lower the building floor-by-floor! Compared to blowing it up, this method saves time and space, pollutes the air less, and makes material recycling easier. And as much as we like to see old-fashioned implosions, you have to admit this is pretty cool to watch. Link -via the Presurfer
The actual tearing down phase may take longer than a quick kaboom, but there's so much more surrounding it, and I don't think you can beat this for safety anyway :)