Backpacking Thailand/Vietnam

Nothing to do in Bangkok? I lived there 3 years and barely scratched the surface. It's not very accessible, sort of reminds me of Los Angeles in that way. You usually can't just stumble in off the street and find something cool, you gotta know where to go. But there is so much weird/cool/interesting/exotic crap in that chaotic place. I bet onkelmicha has an opinion on that.