Some more Tsunami relief links:

International aid organizations:
UNICEF (United Nations Children's Fund)
United Nations' World Food Programme
Medecins Sans Frontieres / Doctors without Borders (donate!)
CARE International
The International Federation of Red Cross and Red Crescent Societies

UK/Europe:
Disasters Emergency Comittee (DEC) - comprises a raft of aid agencies, including the below and others
British Red Cross
Save the Children UK

North America:
American Red Cross
Canadian Red Cross
Save The Children

Anders Jacobsen: Webloggers: Give to tsunami victims and I'll give too!