Ivan Hernandez posted (on his blog) very interesting TEDx video regarding the way how to create great presentation.
How to do that:
you have to divide your presentation into sections
there is time for speaking and time for adding video or other media
then it’s time to provide audience with the demo product/service, etc. – because you already focus the audience attention on…you/your presentation
repeat some words/phrases which (in your opinion) your audience should remember
give examples – it helps to remember
go and check TEDxEast video – Nancy Duarte uncovers common structure of greatest communicators. Nancy compared to presentations by: Steve Jobs and Martin L. King: