Here are a lot more additions to The Best Sites For Learning About The Japan Earthquake & Tsunami:
Earthquake in Japan: Path of destruction is an interactive from The Washington Post.
Teaching Ideas: The Earthquake and Tsunami in Japan comes from The New York Times Learning Network.
TIME Magazine has published a second slideshow.
Japan earthquake: tsunami warning across Pacific ocean is a very accessible series of resources from the CBBC Newsround.
A Japanese nuclear plant may be in jeopardy, as you can see in this NY Times video report:
Radiation 1,000 times normal at Japan nuke plant is a similar report from MSNBC.
The Wall Street Journal has several good interactives and slideshows: