[davidbanham]

Personally I use it to map my presentation into chapters. It allows me to better know where I'm at while presenting, and allows people reading my slides to get an idea of how it's laid out inside my brain.

It was just used by a colleague to organise his slides into:

Topic ▼ Code example ▼ What that code renders into

The last slide was actually rendered live from the slide before it. Absolutely badass.