Plick

I just came across this cool little app called Plick. Very similar to Slideshare, it allows you to upload Powerpoint presentations to the web in order to share them with the world. It then allows you to embedd them into your wiki or blogs etc. Firstly, it enables you to add music or sound to the presentation by mashing the slides and the sound together. You can then download the new presentation as a PPT or a pdf. You can also add notes to each slide so that viewers can get a better idea of your intent. They have also just added the ability to upload presentations created in Google presentation to your Plicks. I still will probably upload most of our presentations to Slideshare as we do have a school account. But it's always worth checking out the competition as there just might be something worth moving for.
If you are interesting in exploring more of these types of applications try Splashcast or Slide .
Another really cool app that I have only played with a little but that I like the look of is RockYou.
I'll check these out a little more tomorrow as I'm working with the students on a web2.0 activity on Tuesday. It's meant to be a bit of fun for the last days of school so I figure I won't have to worry too much about the educational value :)