This is a series of before and after (left/right) satellite images (Photos by Space Imaging) of the Island of Sumatra in western Indonesia on 12/29/2004 showing the destruction left by the tsunami.  Some area are swept clean of vegetation.  Some area are left completely underwater. Go to the Washington Post to see the larger version of these images.

Satellite image sites:

Digital Globe

CBC News

Network News images sites:

NBC

ABC

CBS

BBC

TIME

Misc tsunami image sites :

Hellmut Issels at Phuket

Kevin Sites at Phi Phi