Over the last few days, what with Celine Dion ploughing through 6.5 million gallons of water in a year and Sharon Stone blaming the Chinese earthquake on karma, we’ve thought a lot about how much celebrities care.

And they care a lot. Celebrities, because they are celebrities, feel suffering much more strongly than anyone else. And there’s only one outlet for this profound level of caring – the all-star charity song. We all know the big ones – like We Are The World and Do They Know It’s Christmas – but there are plenty of other less well-known ones out there as well.

Like What More Can I Give by Michael Jackson And Friends, a song written about South Africa, recorded after 9/11 and never properly released because its video was apparently shot by a director of gay porn. Anastacia, Nick Carter, Usher, Ricky Martin, ‘N Sync, Hanson – they all appear on What More Can I Give, though we’d expect none of them would want to discuss it if you asked them about it now.

Why? Try and watch What More Can I Give all the way to the end and you’ll see why. It’s hard, we know – you’ll suffer through more fist-pumping oversincerity than you can possibly imagine – but it’s absolutely worth it, just to see the bit where Usher and Celine Dion give heartfelt spoken-word messages. Not about 9/11, you understand. About Michael Jackson. Incredible.