While Batman Unauthorized might not be the be all end all of serious literary criticism on Batman the way that, say, Geoff Klock's How To Read Superhero Comics and Why is for the superhero genre as a whole, it is still really fun, interesting read. The essays examine a variety of intepretations of the character on film, comics and television through the years. They manage to do a good job of picking apart Batman's multi-faceted existence without ever taking themselves to seriously which, I think, is always important when examining pop culture icons.
Highlights include: "The Cost of Being Batman", not the heavy handed 'emotional costs', mind you, but the actual monetary cost to pay for the equipment (the cost of the Batcomputer will make you soil yourself), "Holy Signifier, Batman!" which valiantly and convincingly explains why the old 60's show might actually be the most enduring version of the character and, my personal favorite, "To The Batpole" which imagines how the, uhm, Bat-talk might have gone down between Alfred and pre-pubescent (sp?) Bruce Wayne in the styles of the 60's camp Batman, Tim Burton's Batman, and the Michael Caine version from Batman Begins (not only is this hysterical but it manages to point out one of the inherent flaws with Batman Begins that I think a few of us have touched on in the blogs here).
There are some weak points like Mike Barr's defense of Batman's Sci-fi adventures from the 50's and early 60's ("Batman In Outer Space!" I'm sorry but this is just one aspect of the character that's best left forgotten) and an uneven essay comparing Batman to Superman that unilaterally decides to ignore The Dark Knight Returns which, for my money, is essential when comparing the two.
Overall, a nice quick read well worth the price of admission (17.95!)