South East Asia Earthquake and Tsunami (how unfortunate that this abbreviates to SEA-EAT) has a slew of links and other precious information that you can check on for updates about the situation in South & South East Asia.
The Acorn has a list of ways you can help. And if you are reading this, you can make a donation via this site. Look to the top right section of the page to see the TSUNAMI RELIEF FUND. Help me reach $10,000.