Fukushima reactor explosion on tape
Video of the explosion at Reactor One at the Fukushima nuclear power plant, March 12, 2011.
You Tube: Video of blast at Fukushima nuke plant, radiation leak reported
Tageschau: Nuclear meltdown confirmed (website in German)
Der Spiegel: The nuclear meltdown in Fukushima 1 happens right now (German)
Der Spiegel: Government talks of an unprecedented disaster (Google Translate - English)