I got to experience SF as a kid in the 60s and, outside of the Haight, it was.
Now, the whole place seems like the Haight in the 60s.
You never know where you'll see oddly dressed and undressed people roaming the streets.
Remember when public nudity was frowned upon? Well, in SF - it's just another day. They protest nude (http://www.nakedprotesters.com/), run nude (http://www.baretobreakers.com/) and parade nude (gay pride - barf - parade).