WildPresenter 3.3 has a great new feature that allows you to import a PowerPoint presentation and a video clip within three clicks -- and you don't have to do anything else. Just wait for the program to create an output that looks similar to the screenshot you can see in Figure 1:
Figure 1: A presentation and a movie side-by-side in one output
Wildform, the creators of WildPresenter have also put up a walkthrough of the entire process on their site. Look here...
