YouTube user StoryMonoroch has posted a computer-generated video that displays seismic activity near Japan around March 3, 2011-- the time-frame of the devastating earthquake and resulting tsunamis. The data rendering once again conveys the scale of this event, though this time from a geologic point of view.
The video starts slowly in order to give the viewer a sense of the background activity, and then at around 1:45, things change dramatically:
Obviously the video above does nothing to convey the resulting human devastation of the people of Japan. For a better sense of that, refer to the excellent before-and-after photo montage from ABC News, Australia.
You might also be interested in a recent glimpse inside the failed reactor buildings at the Fukushima nuclear power plant. The photos were taken with a 10m long "endoscope" camera.
Oh -- and for a global view of seismic activity for comparison, check out this video from StoryMonoroch.