A few of mine have some relevance here:
The Pharaoh Trilogy Speedthrough -- In which I play through an entire trilogy of vintage text adventures, aided by a handy bug.
http://www.youtube.com/watch?v=fsDlM...1&feature=plcp
Sierra Does Christmas -- A look at a number of seasonal demos produced by Sierra using various iterations of their adventure game engine.
http://www.youtube.com/watch?v=x3JR4...4&feature=plcp
The Aardvark Story -- A brief history of an early computer game publisher.
http://www.youtube.com/watch?v=olSVF...1&feature=plcp