How You End...
Ever been to a presentation where the speaker does a good job and then just sort of says, "well, that's all I've got."
It's not consistent with the rest of the presentation.
You've got to end on a high note.
This was brought to my attention in a great seminar at the Microsoft Worldwide Partner Conference by Carl Dubler. Check out his website for a lot of great ideas on how, as he says, you can Banish Boring Presentations.