Even I recognize Ron Jeremy. He's even played himself in a few legitimate movies/TV shows, that's how ubiquitous his fame is nowadays.
But I've never watched a porno and I detest porn. I love the sight of a beautiful woman, don't get me wrong, but porn is just degrading for everyone involved--the people who make it and the people who are exposed to it. It's like cheap rot-gut whiskey for the mind. Eventually your liver can clean out whatever nasty shit you've put into your body, but unfortunately the mind doesn't work the same way--what has been seen cannot be un-seen.