I saw this video a few weeks ago and it has been bumping around in my head ever since. Jamy Ian Swiss is an amazing card magician, and has really done some deep thinking and hard work on performance. He's not shy about his opinions, either. This DVD combines performance of the trick, explanation of the trick (the how) and discussion of why he performs it the way he does (the why). Jamy discusses how we have to work on both technique and the performance. You learn several excellent tricks, and it leaves you thinking about your own performance.
This is a video of a lecture, and the sound isn't always great, but the content is fantastic. He sells the video on his website for $25 here:
http://www.jamyianswiss.com/shop.html
Highly recommended.