Showing you how prepared major media organizations are in the event of the death of a major newsmaker, Elizabeth Taylor's New York Times obituary was written by someone who's also dead. For almost six years.
It reminded me of my first exposure to this practice, which came when I toured NPR's Washington, D.C. headquarters in 2001. One of the stops on the tour was a room filled with racks of stories on audio reels (perhaps digitized since?), including shelves of obituaries ready to run on-air once important names have passed.
Saturday Night Live also did an excellent parody of preparing for the death of notable figures, with Dana Carvey as Tom Brokaw reading different versions of an obituary intro: