I really like this campaign at one.org.
The ONE Campaign seeks to give Americans a voice, to ring church bells and cell phones, on campuses and in coffee shops, for an historic pact to fight the global AIDS emergency and end extreme poverty. We believe that allocating an additional ONE percent of the U.S. budget toward providing basic needs like health, education, clean water and food, would transform the futures and hopes of an entire generation of the poorest countries. ONE percent of the U.S. budget is $25 billion, and redirecting that much money would have to be done over time.Instead of asking for money directly, they are asking that you go to the site and sign the declaration to get the US government to help fund this. I also like this because from the polls I have seen Americans believe that they are already giving 5% of taxes to foreign aid. So you have a campaign that says "hey we are just asking for 1/5 of what you thought you were already giving". Seems like a no brainer.
Bono and other celebrities are helping out. It's just too bad that none of them had written a song called One that they could use for this. :)