Play Doom online, maps

http://mauweb.net/3.0/en/play-online/53--play-doom-online.html
http://www.classicdoom.com/
http://www.classicdoom.com/maps/d1exit/d1.htm
Quake
http://www.arcadecabin.com/fullscreen/quake_flash.html
http://www.quakelive.com/#!guide
http://www.youtube.com/watch?v=NJgc9Xo0U9o&feature=related

Doom

http://www.gdconf.com/
http://www.gdcvault.com/play/1014627/Classic-Game-Postmortem
also interesting: http://www.google.com/intl/en/about/products/index.html

It vs Us
https://docs.google.com/document/d/1_Qn1Uigkr3yG1FRCJ0CV3iE2qvsxQM-gdrjqOTXnexo/edit?hl=en_US