Got this link via Dan a while back. I had to dig it up again because of a discussion with my evangelical Christian second cousin in the Mid-West (one of the two relatives in America I know of - the other is apparently Wiccan or Budhist or something, so I guess that balances it out). My cousin repeated the myth that "American of all political sides have always individually [given] ... more than almost all countries to charitable efforts - both in the country and outside".
This is not true, of course. As Dan points out, America ranks 19th out of 21 rich countries in 2004, even factoring in private giving. Sometimes it's good to know where you can find the facts (especially when arguing with evangelicals).