Here's a link to a blog/consortium blog that's keeping an updated list of problems/issues, and ways to donate for Tsunami relief.
I like what one poster said:
I just made a contribution to the International Response Fund of the American Red Cross. I picked a number, and then I doubled it, thinking of what is needed for relief to Darfur as well.
Thinking about it some more, I realize how stingy I am. I donated less than four times what it cost for the DVD set of the Live Aid concerts, something that I requested on my Christmas list and that I received Christmas Eve. And I'm willing to spend double to quadruple the donation I just made to take Vicki out for New Years Eve and our 9th wedding anniversary.
I just talked it over with Vicki and we chose staying home for New Years Eve, or doing something simple with friends, donating what we would have spent going out to the disaster relief effort instead.