Great introduction to statistics; good read for those easily intimidated by equations; fun and practical examples -- all of these, as other reviewers have highlighted are true. That said, personal experience shows (insert selection bias warning here) that all of us, including those who studied statistics, are comfortable with equations, and may even need to apply these techniques in our professions... still manage to forget, stumble, and mess up the basics. And the best recourse is to periodically remind yourself of the basics - e.g. read a book like this one.
Why do the Geico ads make no sense? Is your boss really as ignorant as you think, or is there something else at work? Is your girlfriend cheating on you?
Read this book (it's a quick one) to figure out how to approach these (and other) questions with some statistical rigor. It's a fun read.