[What get me is that Letterman is one of those super millionaires that Obama want to raise taxes on. ]
Letterman probably has no frigging idea what he pays in taxes. He probably thinks that he pays 14 or 15% since that's what the media constantly harps on. "The rich typically pay about 14 or 15% of their income in taxes because most of their income comes from capital gains which is only 15%." They make this claim all the time without ever truthfully explaining the details. Letterman probably believes that (he has an accountant do his taxes, I'm guessing) he only pays 15% and thinks it should be higher. Someone should tell him that he can instruct his accountant to pay more if he wants to pay more.