google product wish

I was watching a video from the google tech talks. (http://video.google.com/videoplay?docid=-3999952944619245780). The video has a presentation which is inter-mixed with the video of the presenter.

I wanted to see the previous slide without pausing the video, but this cant be done as this is just a video. So i was thinking why not have a tool for such educational talks. The video and the ppt should be two parts of a larger object.
1) I should be able to jump through the presenation independent of the video.
2) And also i should be able to synchronize the video with the presentation page when i want to.
3) The UI should have an option of shifting the focus to the video or the presentation.

Wish google will come out with such a tool ..