Serious Magic Communicator is a nice product: it combines teleprompter and chromakey (green screen) software, so you can rapidly create "talking head" videos with video or graphics in the background, a la TV weathermen. The quality, of course, isn't exactly Lord of the Rings, but it's a very fast way to produce content.

Personally, I've found that it's not quite a silver bullet for producing training videos for software developers, at least not without actually building a small production studio, but it's quite good.

Anyway, they've been acquired by Adobe. It may be that Adobe acquired them out of petty cash for some of their other technologies, like their HD codecs, but hopefully it will mean a wider audience for Communicator.