[toddmorey]

A couple of years ago, I watched a guy explaining his concept starting with nothing but a blank canvas in Adobe Ideas (very similar iPad vector drawing app that's been out a while). He'd sketch the high-level stuff and continually zoom in to provide more details. It was like watching a Prezi being built in realtime and it was memorizing. It held my attention and communicated way more than any prebuilt presentation would have done.