PowerPoint Broadcast publishes a slide show to anyone on the Internet
Powerpoint has enhanced video capabilities which allow users to embed video, crop it to the section they want, index key points for instant access and add styles and effects. Simultaneous co-authoring in Powerpoint is enabled on Sharepoint 2010. There is also an excellent feature called “broadcast”. This is for scenarios where you are presenting to remote viewers. If you create a set of slides and choose broadcast, your slide show is linked to an online service. E-mail a special link to your virtual attendees, and they can view the show in Powerpoint Web App from anywhere, after logging in with a Microsoft Live ID.