May our thoughts be with the people of Haiti at this time.
Donations to aid the victims of the earthquake devastation centered around Port-au-Prince may be made at the following sites:
Doctors Without Borders has a longstanding presence in Haiti. Their facilities there have been severely damaged in this catastrophe, and alternatives must be created at once, under extreme conditions.
Also, of course: American Red Cross.
See more relief organizations and donation links at Google's crisis response page.