Prezi is an online service that allows you to make
movies/slide shows/fancy presentations with pizazz.
Teachers and students using an .edu email account receive a free account.

Prezi provides a series of tutorials about their program.
Check out the intro. video here:

Other online tutorials/info:

http://www.youtube.com/watch?v=gpLsF5lh98k&feature=related

http://www.youtube.com/watch?v=CgetV1qg4eY&feature=related

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Examples from "flipped" classrooms:

Pre-writing for High School Writers

ELL Pre-writing Strategies that can be used by Primary Teachers