Slides with interactivity work great in scenarios where the presentation in question is not linear in which slides advance one after the other at set timings. Also, the person or audience for whom these slides are intended must be aware that some interactivity has been placed on these slides so that they can go ahead and click on some slide objects to cause an action to happen. This is especially true for trigger animations in which you have to click one object to result in an action happening for another object. Taking the concept of trigger animations further, you can make a click on a PowerPoint shape (or even an Action Button) to cause the sound or video clip on the slide to play, pause, resume, or stop.
Microsoft and the Office logo are trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries.