Present.me

Present.me is a web service that lets you create effective presentations through your PowerPoint files.  What makes this site unique, is it lets you add a narrative to the presentation. Once you upload your PowerPoint, you can record a narrative through your webcam and microphone as if you were presenting you slildeshow. The final presentation then appears with your webcam recording on the right and slides on the left. A filmstrip view of the slides is also given on the bottom of the presentation. Although there is a paid service, PresentMe offers a free plan that lets you record up to 10 recordings per month; each of these presentations can be 15 minutes long.