It's 2008. No one likes books (yeck!), let alone buy them (we download them if necessary, then read them on those electronic tablets that everyone uses to read books now). So how are we, as a society, supposed to see The Art of the Dark Knight book without spending money on a book? The internet, obviously. /Film has graciously posted some scans of early concept art of the Joker, which you can see here. The designs range from disturbingly graphic to "hey, is that Scott Weiland?"