Powerpoint has been the standard presentation tool for many years. Some people make good use of it, but sometimes a presenter will only read a bunch of bullet pointed lists at the audience while they are trying to read the same text.
You can do better than this!
If you have a Mac you should look at Keynote as it has some very nice touches and will make you look better all round.
But if you have a really important event with a lot riding on winning over your audience you may consider this: Click to view PREZI
Prezi presentations can contain video, audio, images and Flash, and can be branded and available as standalone files if your venue’s internet connection cannot be relied upon.