Ugly Americans ***: From the author of ''Bringing Down the House'', another fast-paced page-turner, this time about hedge fund traders in Tokyo. The story is entertaining but seems largely fictionalized, and after a while, the lack of fact-checking undermines the book's credibility: For example, the book incorrectly states that the Tokyo Tower is smaller than the Eiffel Tower, when in fact it is larger--the Amazon.com reviews cite many more examples.