I've started a series of screen-cast on youtube that compare some basic features of Windows 7 and OS X Leopard from an end-user point of view. I try to keep a humoristic tone (specially when something goes wrong like in this first video :P). I do one take per OS unless something preventing me from publishing the video happen. The idea is to show how each OS react on a first try. The settings related to the tests where also rested to assure the authenticity of the video.
For the editing part, I try to keep it very close to the original. I will never cut a shot unless it's preventing me from publishing the video. In that case, there will be a notice in the video. Everything is shot in HD to help you see what I'm doing during the screen-cast.
You can take a look on Youtube if you're interested. The first part is about some basic file and screen sharing over different network type. Which one is easier to use and what kind of features are to be expected with the DEFAULT OS configuration.