Ian Landsman is Starting From Scratch, February 15, 2008:
How to make Screencasts
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This is probably the most useful thing I’ve read on a blog in the past year.
http://www.37signals.com/svn/posts/775-ask-37signals-how-do-you-make-screencast-videos
The most important part is one simple sentence. Make the audio first!!!! Doh!! No wonder I always sound like an idiot trying to do the audio while using the UI. Do the audio first and then create the video portion while listening to the audio and match them up. So much more intelligent.
Discussion
I plan on checking out ScreenFlow which is a new release for the Mac. It looks like it could be the killer app for screencasting on the Mac. I've tried SnapPro X before and its not intuitive (at least to me). The downside is that ScreenFlow is on the expensive side. But the demo is free 
http://www.varasoftware.com/products/screenflow/
Created by Les on 02.15.2008 12:14 pm
Wow, that is very nice Les. $99 isn't too bad.
Created by Ian on 02.15.2008 1:24 pm
I do think it's worth recording the audio sounds of typing and mouse clicks. It gives the recording a better feel.
I've done it both ways: recording the audio live and deferred. The good thing is that you can sort of do it both ways, especially with and app like ScreenFlow. Record the audio live. Not happy with it? Re-record part of it. At least the timings are likely to be good for talking during the video movements.
Created by Kevin Dangoor on 02.15.2008 4:04 pm