Today's Wired bears a nice primer on manga in the USA, a 1.9MB PDF of a comic tracing the history of English manga. It's laid out "backwards," which is unbelievably hard to read off a screen (go to the last page, read, go back two pages, read, go forward one page, read, go back two pages, read, etc), but it rewards patience (or printing). This is some fascinating stuff, and it's superbly presented.