I still have to understand the whole Angell story as debated on this forum (he has a spooky bio because of the pentagon and other details, but Simon's argument with the pictures seems pretty strong too), but here are a few elements to add to the picture (sorry if they have already been noted):
The wikipedia's page on David Angell was created on September 14th 2001.
http://en.wikipedia.org/w/index.php?tit ... did=247234
David Angell, American TV sitcom producer. Angell died at 54 on September 11, 2001 in the crash of American Airlines Flight 11 in the September 11, 2001 Terrorist Attack. Angell, a native of West Barrington, Rhode Island, was a longtime NBC producer who played a leading role in creating Frasier, Wings, and Cheers.
Angell was returning to Los Angeles with his wife, Lynn, after attending a family wedding in Chatham. He was survived by his brother, Kenneth A. Angell, the Roman Catholic bishop of Vermont.
The anonymous user who created this page added a number of other things to wikipedia all around those days, its activity stopped on the 17th of september 2001 (possibly interesting stuff on this list).
http://en.wikipedia.org/w/index.php?tit ... 180.71.xxx
Angell did not have a page on wikipedia before, which might be normal even for a famous producer, since the show "Frasier" itself didn't have a page on wikipedia until the 31st of December 2001 (""Frasier" was created in 1993: Wikipedia in 2001). The page had a single line and did not mention Angell.
The first appearance of David Angell on the page of the show "Frasier" dates back to 7 April 2004, by user Thomas Veil (this being his very FIRST contribution to wikipedia. He's still active today)
http://en.wikipedia.org/w/index.php?tit ... id=3090611
On the page of the show "Wings", Angell is first named on the 14th of April 2005, by prolific user Great Scott:
http://en.wikipedia.org/w/index.php?tit ... d=13327504
On the page of "Cheers", Angell made its appearance the 27 january 2006
http://en.wikipedia.org/w/index.php?tit ... d=36943603
added by user Staxringold who credits as a source IMDB.
Apparently Angell did not have a page on IMDB until 2004
http://web.archive.org/web/200404111718 ... nm0029628/
and a bio until 2005
http://web.archive.org/web/200505300135 ... 029628/bio
(at least, that's the oldest stuff I could find on IMDB).
In his bio we read that he won an Emmy in 1983 "for an episode that first broadcast on November 17, 1983 titled Old Flames", however there is no mention of it on this page of IMDB itself:
http://www.imdb.com/event/ev0000223/1983
while the award is mentioned on this unofficial page for the first time in 2006:
http://web.archive.org/web/200611140639 ... 983-E.html
This video at 2:17
http://www.youtube.com/watch?v=i8VaJgzUa0g
seems to corroborate the writing credit of that episode to one David Angell, although it does very likely comes from a DVD, possibly released after 9/11. (In fact, according to Amazon,
http://www.amazon.com/Cheers-Complete-S ... B00008NV4G
the DVD of the first season was released in 2003.)
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While not exhaustive, I guess this research might show that Angell was firstly included in Wikipedia -- and the whole web, apparently -- as one of the victims of 9/11, and only secondly, no less than two or three years later, his name started appearing on dedicated places as that of a producer or writer of NBC.