Ok Guys,
I would agree that it may be an overkill for a pre-flight briefing.
I do think that the point I am trying to make is that for lecturing, it is an awesomely powerful tool.
Remember you can show video footage, as well as digital photo's in addition to instructive slides.
It also allows you to introduce elements of a slide 1 at a time. The closest you can get to any other way is with layered flimsies for OHP.
