I saw this at the 1st Thai Film Festival in New York.
They flew Wisit Sasanatieng over from Thailand to give a talk about it. My friend was one of the organizers of the festival. She told me virtually nobody in Thailand has heard of this guy. He exists almost solely to make movies for foreigners.
It's a really cool movie. I didn't really know where it was going at points, which made it really fun for me. Also, it has some fucking great comical violence.