For a great list of Batman books that are must-reads, check out this list from io9.  Sure to fly off of your teen section shelves and into the hands of tweens, teens and adults alike. 

Make sure you read the comments posted below the main article for some more must-read Batman titles.  A great discussion!

Batman remains one of the favorites for graphic novel fans unlike many of the other classic superheroes.  Anyone else have favorite graphic novel titles that are must-reads or for libraries are must-owns?