I'd strongly recommend "101 Albums That Changed Popular Music" to any lover of music. The book covers a wide variety of genres through an extensive amount of time, starting with the "Anthology of American Folk Music" by various artists in 1956 up until "Elephant" by the White Stripes in 2003.
Each of the albums gets around a two page write-up, giving a brief description of the artist(s), the album's sound, and the impact of the album on the music of the years to follow. While the write-ups are interesting enough that I was willing to read all the entries, even if I wasn't particularly interested (or aware) of the album in question, I found that a lot of Smith's language was repetitive. He often used the same adjectives to describe aspects of the album ("thundering" bass and "avant-garde" were major offenders). I can't completely blame him, however, when there's 101 albums each requiring a description. Overall I thought the descriptions were pretty insightful, giving a basic understanding that provides enough information to decide if the album seemed like something I was interested in, and allowing me to form an opinion on whether or not I thought the album belonged on the list, while remaining laconic enough to never bore me with details.
I found the list itself to be questionable in some regards, but I think everyone who reads this book will object to certain albums that made the cut, and others that didn't. Smith clearly addresses this in the Preface, which I found to do a great job of explaining the conditions under which the list was made. I think overall, almost all genres are represented in an appropriate amount and that a good mix of popular and more "underground" albums were included.
Although the list of 101 albums is the main focus of the book, I found myself enjoying the history of Recorded sound in the beginning of the book and the "Ten Important Producers" section at the end of the book. Overall, I think the book was a good read if you enjoy reading about all kinds of music. I also think it'll be more enjoyable if you've heard most of the albums, as I found myself enjoying the passages about albums Iv'e heard more than passages about albums I haven't heard. However, if you haven't heard most of the albums this book may very well peak your interest on certain albums. My only major complaint is the repetitiveness of the writing, which only gets worse and worse as you progress through the book. Other than that I felt like it was very enjoyable.