What do you mean by "creeped out"?
I think they are just using special effects like in any other film, to assist with drawing you into the film and getting you 'in touch' with what they are trying to put across. If they just gave you a film where the 'experts' just sat there and talked to you about it, it would be like being in a university lecture and you could very easily fall asleep and get bored of it.
We also have to consider that people generally are stronger in one of the Visual, Kinesthetic or Auditory fields, with most people benefitting from a combination of them. If they are explaining things in words and giving you a visual reference as well that draws you in and let's you feel what they are talking about, it becomes more captivating and of interest to more people. All part of good information sharing.
Giles