I am terribly sorry, but even though some people i know want the ranting about how to help Japan to stop, I do not mean to repeat what -they- say.
First off, Japan technically does not need the kind of help we might expect them to need- food, hygiene, and survival kits. They are not a developing country, and they can afford to give themselves aid, as Japan has the third largest economy in the world. They've already supplied themselves to rebuild, there's not much we can do to help.
What kind of aid would they need? Sure, many countries are now refusing to import now-irradiated Japanese goods, but be serious- economics is long term: think at least a 5-year time span. They're not going to go under, as nuclear disaster has occurred before; they KNOW how to recover. Simply give them sympathy, and respect as they do their best resume their daily lives, just like the rest of us.
For thousands of years, the Japanese time and again had earthquakes and tsunamis hit their homeland. For thousands of years, the Japanese rebuilt their homeland every time it ever became devastated. They reinforced their homes and workplaces with the best money can buy, and they encounter these natural disasters so often that they simply resume their work afterwards. The Japanese were prepared for this, and the world is thankful.
We, as citizens of the world, can learn alot more from the Japanese reactions during their time of peril. When the lights in the stores went out and goods flew off the shelves, shoppers rushed to return the products on the shelves once the worst passed. There was no reports of looting. Japanese news channels only reported anything that gave hope, and organized crime such as the Yakuza turned out to be the largest contributors to the recovery effort, delivering medical supplies and handing out uncontaminated food in spite of all of the risks the drivers and volunteers took on their lives to help their community. Imagine what a miracle it would be if there was order in a place of utter chaos. That is Japan.
Japan: the hub of Asian culture. It will never be gone forever.