If you are the one who make presentations quite often then 2 new PowerPoint Plug-ins are available for you.
This is from Microsoft itself. pptPlex is new thing for Power-Point. Its a gr8 Innovation. But Microsoft has to do lot more. It is plug-in for Power-point, which gives a different user experience (interface) while viewing the PowerPoint. The interface makes the entire slides conceptually laying on the one screen and each slides can be zoomed-in to view.
This is lil more poppular as firefox plugin. This is now coming up for powerpoint as well. You can surprise you audiance with this tool.