Help the critters at DogtownUSA!
You already know you can donate to the Red Cross, or the Salvation Army, or any of those good places, and they'll get your bucks to the humans who need it most. But check out this site if you'd like to help the NON-human* victims of Hurricane Katrina, who also need your help. (*and no, I'm not talking about the looters! nyuk nyuk!)