The Aristocrats

In Roger Ebert's column today was mention of 'The Aristocrats' (no not the Disney Aristocats - sheeeesh). Now I'm usually up on this sort of thing and I had a slightly familiar recall about it.. To the internet.
(Fair warning - this is XXX rated stuff - must be why it's so funny).
First to Google. There a pointer to a Wikipedia article was right on top.
The Internet Movie Database - that's were I recall it while looking up something about Larry Storch. It's his most recent entry.
And first on Google was this blog about the joke. Terrible stuff. Can't stop.