For those who want greater flexibility than that provided by existing presentation tools, look no further...

Prezi - is an online zooming editor that allows the production of stunning presentations and/or learning objects.

In their words...

"Prezi allows anyone who can sketch an idea on a napkin to create and perform stunning non-linear presentations with relations, zooming into details, and adjusting to the time left without the need to skip slides."

You must find the time to take a closer look at http://prezi.com/.

Note: Access is currently by invite only...