3d Graph Illustrator

What is the best topic to cover in an oral presentation on Adobe Illustrator?

Taking place from 10-15 minutes. I'm thinking I should cover the basics first and then, if time permits, I can display a topic like how to make a 3D chart. I do not know what the best idea.

It depends on what the public knows. If they are total noobs, I cover only the basics of vector, with the selection / feather and tools transformation. The extra time I would use to show examples of vector art and do not take into account samples Illustrator comes with some pretty impressive. If they are too Advanced I like to try some new features, Live Trace, paint and then, if there is time to explore the 3D effects.

Tutorial: Illustrator graph tool changing column design (CS5 CS4 CS3 CS2 etc)