Some time ago I had a lecture in Kiberpipa about 3D game engine history titled “From Doom to Crysis” (Od Pogube do Krize) with some very nice demonstrations and anecdotes of modern 3D game engines and their older counterparts.
The video is now available on Kiberpipa video archive with slides available on Slideshare (I suggest downloading original pptx file for embedded videos). The lecture is in Slovenian language.
It's also available on my YouTube channel: