www.prezi.com site, here is an introductory video that explains Prezi very well. Take a minute and watch it.
OK. What did you think? Pretty amazing right? Can you imagine the creativity that your students can put into these types of presentations? There are several tutorials to help you along the way. Imagine presenting a new concept to your students in this way? It will be a great attention grabber!
Here are some examples of Prezi presentations to give an even better idea of what you can be doing to liven up presentations forever!
Definitely check this one out! http://prezi.com/kh8oftmvbuxk/