The currency high-roller: Float like a butterfly with the euro and drop like a stone with the pound!

ECONOMIST: Explore a clickable map of The Economist's new theme park

On Friday, the three-time heavyweight champion, whose name became synonymous with the phrases "float like a butterfly, sting like a bee" and "I am the Greatest, " made another memorable appearance late Friday during a spectacular opening ceremony ushering in the 2012 Summer Olympic Games in London.

CNN: STORY HIGHLIGHTS