This story is so famous written in the Adsense Blog and have been read by almost adsense members. Here is the site belong to a publisher from India and he is making big money from adsense. He left his job as journalism and started a website called dancewithshadows.com. See for yourself how he arranged the ads and the topics he covered, mostly about India. It's a huge market there.
Success story like this can truly give an aspiration to people like us who are struggling like hell trying to make money from Adsense.