I was in my mid 20's when Doom came out in the mid 1990's (might be showing my age here a bit but oh well) - I spent A LOT of nights playing Doom over the modem with a friend of mine. Looks like John Carmack has left ID software:
http://www.ign.com/articles/2013/11/22/doom-creator-john-carmack-officially-leaves-id-software
I haven't really been into any of their releases since Quake 2, but it's definitely the end of an era.
I can also recommend "Masters of Doom" - a book about Carmack and John Romero and how they founded ID software - it's not written that great but the story is cool.
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Brian Johnson
Founder and Lead Developer - Jamroom
https://www.jamroom.net
updated by @brian: 12/25/13 11:18:38AM