People like him & Bono etc use the plight of starving children to raise their own profile. U2 are worth over a billion dollars, If he was that concerned he would donate a bit more than turning up a talkshows chatting about how great he is.
A very good example were the 'Live 8' concerts. Nothing more than a catwalk for the latest pop-stars.
Do you really think someone like Snoop doggy doo doo gives a shit about civil war in the Sudan..?
i know i don't, just like everyone else