Did you ever feel the desire to show some commands in Unix or Linux to colleagues? Just to demonstrate things? Or, did you ever felt the desire just to show off 

You can use websites like http://www.screencast-o-matic.com/ or other screencapture software. Maybe the use ffmpeg in Ubuntu/Debian helps you out (p.e: ffmpeg -f x11grab -s wxga -r 25 -i :0.0 -sameq /tmp/out.mpg) But it creates video’s which must be uploaded and may become large. A lot of work and it takes a lot of time to create.

http://www.playterm.org/ Could help you out even more. A nice website where you can upload your cool terminal adventures. Type in ttyrec in your terminal, then perform some cool skills in your terminal and to complete this, just type exit. Upload the tty file on http://www.playterm.org/?upload=now and wait to get in the wall of fame on playterm!

ttyrec can be installed in Ubuntu by using apt-get.

However, there is also a nice alternative, which also works great: shelr. 

See http://shelr.tv . Full explanation here: http://shelr.tv/about

Happy shelling! ;-)