[Blarg]

Graham Greene wrote two. The first one was incredibly good. And I don't even like Greene all that much as a fiction writer, at least not all the time.

I guess Benjamin Franklin is the standard answer.

Gandhi's is pretty popular too.

Then there are books that aren't quite simply autobiography, but are largely autobiographical but arranged around some particular subject. For instance, William Goldman's Adventures in the Screen Trade, about his career as a screenwriter, was fantastic. So was When the Shooting is Done, the Cutting Begins, by the editor for Woody Allen's early comedies. Both give a ton of insight into movies and have lots of really great stories.