Is it a smart iPhone or a dumb macbook?

Whatever it is, I’m starting to like the idea of using it for sales calls, loading powerpoint presentations (exported at .mov files) to it before heading out.  Has anyone found a promising overhead projector app?

Dear Apple:  Give the iPad multi-tasking ability, USB and ability to share files across apps and I’m sold.

Until then, I’ll travel with my macbook pro and tether to my blackberry.  This way, I have all the power I have in my office without having to carry an extra device…..

J