Mike Synder of Sonoma Partners asked me the other day: "why isn't there any voice over on your sceencasts?". The answer is simple: expediency. Most of my screencasts are down at mid-night while I'm sitting at home on the couch (connected to CRM Live or using a VPC). I do them in 'one take' and then encode them.
Next week I promise to find some quality time, close my office door and encode one with voice using a recent build. Stay tuned!