As can probably be guessed by my avatar, I'm a pretty big fan of Commander Keen. I also like to make YouTube videos in my spare time. In celebration of Keen's 25th anniversary (which was on December 14th) I spent far too much time putting these two loves together and made a video about the Commander Keen series:
https://www.youtube.com/watch?v=X4bkptxpu_I
Enjoy!