Transparency International has released its 2009 Corruption Perception Index, which focuses on corruption in the public sector and uses surveys to establish how much corruption is perceived to exist within the country. This year's worst included Afghanistan, Iraq, Sudan, Myanmar and Venezuela.
Below are some highlights from the rankings. Depending on your familiarity with the survey, the U.S.'s ranking, which is include below, may well surprise you. See the full rankings index here.