Back in the day when Skype was a pretty cool peer-to-peer encrypted mesh network, that successfully evaded firewalls and traffic analysis, I wrote a tool to proxy Internet traffic ontop of the Skype mesh. I was quite young when I wrote it, but I managed to dust off an old demo screencast I made (and convert the swf to an mp4), which gave me a laugh. If you're curious:

http://data.zx2c4.com/skypeproxydemo.mp4