Sean has mentioned this guy before, but I think he deserves his own thread. Apologies if there's one already.
Basically, he's an arahant, by his own assertion, and reckons it's not that hard to become one too with reasonable dedication and proper instruction. So he's written his "unusually hardcore dharma book", which you can read online here
Suggest you read it all through before you ask him any daft questions (unlike me). He's pretty thorough, and really quite funny.
Best wishes,
Ian
