Derek writes that Chuck Yerkes passed away in a motorcycle accident (copy on this page).
He sent a mail to the perl.org list-owner address late that afternoon and I replied to it just in the hour before the accident. Freaky. I didn't know him, barely even by reputation, but from reading the memorial wiki, he seems to have been a great for everyone who had a chance to know him. Hopefully they use Unix servers where he is now too. :-)
At first I though, "Who the heck is Chuck Yerkes?" But then for a second I thought that his name seemed familiar. Then I went to the wiki page and saw that he had been a frequent contributor to openbsd-misc. That's exactly where I knew him from. Upon searching all of my Eudora folders, I found hundreds of messages from Chuck. May he rest in peace.