Recently made this layout for Metropolis Magazine, the article looks at a new book called AX Vol. 1: A Collection of Alternative Manga edited by Sean Michael Wilson (Top Shelf Productions, 2010) and looks at avant-garde manga. Twisted and rare manga translated into English. Although we had to tame down the pages shown in the Magazine, the book contains some pretty gnarly stuff. Read all about it here.
A couple of examples of the stronger stuff, maybe not train material (unless you are a respected Japanese businessman), but interesting anyways.