Serious Games-video clips

If any of you were curious about what these games might look like, as I was, I found some clips on youtube of serious games:

http://www.youtube.com/watch?v=c4sxxxQ4qTA

http://www.youtube.com/watch?v=If57xaVy9AA

While I was looking through the clips I was surprised to see they have serious games for a variety of topics from medical training to marketing skills. I wonder how popular these games are as a form of training. Has anyone ever used a program like this for job training?

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