PREZI

Prezi is a web-based presentation application and storytelling tool that uses a single canvas instead of traditional slides. Text, images, videos and other presentation objects are placed on the infinite canvas and grouped together in frames. The canvas allows users to create non-lineal presentations that can be zoomed in and out of a visual map.

It escapes the tipical slide presentations and it's really simple to use. It also lets us share presentations with other Prezi users.