I know some of you are sick of hearing about Katrina, but, I figured this was an easy way for some of you who can't immediately donate time/money.
http://speakup.oxygen.com/campaigns/neworleans/register/644dba2f90951a01a6dac45cb2862bb9/ Oxygen will donate $1 for every person that joins their campaign for the patients of the New Orleans Children’s Hospital (up to $10,000). It looks like only 2000 or so people have registered. All you have to do is fill in your name, age, zip code and e-mail (use your junk mail address if you're scared of getting put on a list).
It then keeps track of those who registered in your network (so you can see how the campaign got to you, and who you've impacted into joining).