I often recommend that sales and presales teams record their web-delivered demos (e.g., via WebEx and GoToMeeting) so that they can watch/listen to the recordings and improve their practices (pace, tone, mousing, word-choice, use of annotation tools, hearing customer questions accurately, etc.). It can sometimes be a bit uncomfortable to ask the customer if it is OK to record the session, however.
One delightful approach is to ask
the customer if it is acceptable to record the demo “so that you can replay it
for yourselves, if desired, or share with colleagues”. Wonderful!