I stumbled upon this a while ago and it blew me away.
http://www.youtube.com/watch?v=EBeiLOxmQxg&list=PL82722126899D98ABBefore you click on that link, let me tell you what's there.
This guy made 11 videos of himself playing Diadem of Maunstraut, narrating his playthough. Its video captured so its not poor quality.
The really impressive part is that each of the 11 videos are
over 30 minutes in length
A PIECE. Counting the miscellaneous minutes, its probably 6 hours of professionally shot footage of the game with his voiceovers.
Moved, I messaged him thanking him for the tribute.
Likewise, he responded back, thanking me for making the game. :)