My Japanese wife has been glued to the TV since Thursday.
All of her extended family is in Tokyo. She called her father and sister, imploring them to stock up on food, sundries, water, batteries, plastic wrap, and duct tape in anticipation of the Fukushima nuclear power plant failing and releasing tons of radiation into the atmosphere. In addition, the chance of a major aftershock in Tokyo is quite high, so they should be prepared.
Her sister's response: That would be selfish. If they hoarded, others would go without.