I talk about this book:
(https://www.batman-online.com/forum/proxy.php?request=http%3A%2F%2Fwww.freeimagehosting.net%2Fuploads%2Fdf041e93da.jpg&hash=a3018cac0bfd01ba5f4738d578b1c070a20413d9)
http://www.amazon.com/Batman-Unauthorized-Vigilantes-Jokers-Heroes/dp/1933771305 (http://www.amazon.com/Batman-Unauthorized-Vigilantes-Jokers-Heroes/dp/1933771305)
It's basically a collection of essays that examine aspects of Batman through the strictly personal perspectives/opinions of the various contributors, and though one can disagree with some things being said inside its pages (there's some Batman Returns bashing that sounds like praise to me), it's quite an enjoyable read. Worth picking up for those that may have missed it.