Presence

In The Big Lebowski, The Dude tells Maude Lebowski that, among other things, he co-authored the Port Huron Statement (the original, not the compromised, second draft), and:

Dude: You ever hear of the Seattle Seven?
Maude: Mmm.
Dude: That was me, and, um, six other guys.

Maybe I'm alone here, but I figured this was just witty banter. Turns out that Jeff Dowd, the inspiration for the character of The Dude, actually was one of the Seattle Seven!

No word yet on the Port Huron statement, or the Metallica Speed of Sound Tour.