Very strong research, and entertaining
Although there are some things in this book that might offend some (some foul language, some well-intentioned, but demeaning references to God, etc.), overall Michael Moore proves that his "pen" is just as mighty as his screenplay. He discusses various problems that have, in his view, essentially destroyed the United States, and convincingly shows the reader how corrupt high-level government really can be (especially in chapter 7).
His bush-bashing is equally, if not more, prevalent here than in Farenheit 9/11. He also makes the point that "fear" is a great tool that has been used constantly by the media since 9/11.
Good book, and great attention to detail -- despite the seemingly immature theme (the title, cover illustration, general writing style, etc.). But, as is always the case with such liberal free-thinking types, conservative readers should proceed with caution.
