Prezi presentations are a fantastic replacement for or addition to Powerpoints and other more standard presentation material in the classroom. The fluidity or "zooming" nature of these presentations appeal to students sense of novelty, and I have often had literal "oo"s and "ahh"s coming from my students over topics as dull as grammar, rhetoric, and mechanics. This is no small task.
This prezi covers the 3 pillars of Aristotelian rhetoric: ethos, pathos, and logos. Whether you are introducing them to it for exposure or plan to use it in conjunction with other materials to start working on argumentation or persuasive essay writing, this presentation is a fun and lightly humorous way to engage with rhetorical devices that are over 2000 years old.
The end of the presentation also includes an assessment of students requiring them to write an email that uses the 3 branches of rhetoric. Speaking from experience, the results are not only a good assessment of their understanding of how the devices can be manipulated and used, but also tends to produce hilarious results. It can be done as an in-class or homework activity.
Although I use it with my SMARTBoard, the prezi only requires that you have a computer hooked up to some sort of projector for the students to see.