How about that Live 8!?!
Now that the hoopla is over, if you prefer a more bottoms up than top down approach, if you don't think that G8 leaders run the world, than please check out Compassion International. It doesn't focus exclusively on Africa, but world wide poverty. It is a very well run charitable organization, earning 4 out of 4 stars from Charity Navigator. It is all about one person (or group) helping another person. Yes, it is quite explicity Christian, which is important to me; if you would prefer to work through an organization that isn't explicitly Christian that is your choice and please do so.
To those who are thinking "hey, I thought you were against aid to deveoping countries" here's my position. Economic problems will be solved by political and economic development, but in the meantime there are people who are in desperate need. So while I think a lot of the big government programs hurt more than help, until countries do develop, the right kind of aid is needed. And feeding and educating children locally is (one form of) the right kind of aid. There is more to life than politics and economics, and Compassion helps there too by spreading the Gospel which should be preached to poor and rich alike.