Liberia, Burma (aka Myanmar) and ... The United States of America. Not so much comic as just sad.
About 10-15 years ago I remember hearing about some guy who sued the US government for not converting to the metric system. He claimed that it wasted a few billion dollars each year in converting measurements over for import/export labelling. Then there's the catastrophe of the Mars Surveyor/Climate Orbiter where they lost the interplanetary probe due to different teams in the mission using different measurement systems.