Here's something I've been messing with, but haven't spent as much time with it as I should...Here's a javascript scroller that uses <LI> html tags to scroll text and images on a page:
http://www.dynamicdrive.com/dynamicindex2/sagscroller.htm
Here's a quick example:
http://www.dombom.com/scroller/Noname1.html
This is just a simple, very basic example...I took a Wikipedia page for people "born today" and applied the scroller js to it.
Now use something like Camtasia or Camstudio to do a screen recording of the scrolling text and it's much quicker than making Powerpoint presentations for videos.
If you just want to make a couple of videos, this technique probably isn't worth the effort, as you'll need to adjust the scroller as well as the CSS to get the look you want.
But if you have tons of PLR articles and can do a search/replace to get each paragraph to use <li>, this is a very fast way to convert a lot of articles into videos.
Also, try adding some animations or photos from www.Morguefile.com to make them more visually appealing.
And because it uses html pages and CSS, you have all the control of design those options give. You can add fancy background images, change fonts, colors and more. Another suggestion is to use an iframe where I have a pic of the penguins and have it refresh to pages containing different impages...There's plenty of possibilities.
Then add some royalty free music and maybe a voice track of you reading what's on the screen, and this is a pretty good way to crank out a bunch of videos. It's also pretty good for doing step by step "how to" videos.
Again, don't do this is all you want is a couple of videos. But if you have a lot of content you want to convert to video, it's much faster to set this up than it would be to use PowerPoint (or OpenOffice) to create slide shows.
Maybe not for everyone, but for those good with html/css and have a good grasp of Tuelz, this can be a powerful option for creating a lot of videos and for repurposing your PLR articles (without having to rewrite them.)