Whilst attempting to enrich my knowledge about Agile methodologies and Scrum in specific I found the site Learning Scrum. This site turned out to be a jewel and it contained a video of a Google Tech Talk by one of the Godfathers of Scrum, Ken Schwaber.
In this talk he explains the history and purpose of scrum as well as what usually happens when developers get into time shortage. On of my favourite quotes from the video is:
By cutting quality we can produce more crap.
Below is the embedded video as first seen through http://learningscrum.com/20080315/scrum-et-al-video/
If you like to know more, view this video. It is one well spend hour of your life!