As Josh reported earlier, Japan was hit by a massive earthquake and subsequent tsunami, which has caused massive damage along Japan's Eastern seaboard. Thankfully, it seems all our friends in Japan are safe, and our prayers go out to the ones who are lost out there.
If you're interested in keeping up with the information that's coming in from Japan, Dale has pointed out that major infrastructure damage has taken out a lot of cell towers, so people are updating Twitter where they can get an Internet connection. Beyond that, some of your best bets are the streaming videos of NHK News and BBC News, and the impressive photos on The Atlantic's photo blog, which includes the above image.
If you're looking for information on someone who's living there, or are living there yourself: Time Out Tokyo has a list of emergency shelters and information on what's open/closed, and Google has a Person Finder service running.
You can donate to the Red Cross' Disaster Relief Fund, which will go towards helping with relief efforts in Japan, by visiting their website or texting REDCROSS to 90999. We'll update with any other reliable causes you can donate to.
[Update: There are reports that the Red Cross has been taking a cut of the donations. Personally, I find that hard to believe. If you're concerned that that may be the case, and want to make sure all your money goes to the relief efforts, Japan Society is also accepting donations. 100% of their proceeds will make it to those in need.]
One last bit of (lighthearted) info: Apparently Suntory drink machines are prepared for something like this:
Suntory vending machines have emergency levers beneath a sticker on the upper-right corners. Pull the sticker off, pull the lever firmly and you'll get free drinks.
I've got to admit, that's amazing that emergency planning operates that far as to give out free drinks to people.
From other sites around the web