I was going to do a blog post pitching the idea of using LibreOffice Impress or Powerpoint for podcasts with images.
Basically your podcast as background audio with a bunch of still photos.
But hey. It looked way out of touch with technology we have had since 1998 with 3Dfx cards.
So here is my idea. Make Impress more impressive with OpenGL and accelerated 3D graphics.
With the option to export the presentation to video (h.264) you could then use it for podcasts, blogs and more.