AikiRooster
PainMaster.
Wasn't sure if any of you had seen this before. I like it so I thought I'd share just in case someone here would want it and didn't see it before. Yes, they are free.
http://www.tu-darmstadt.de/hg/aikido/mpegs.html#OSENSEI
http://www.tu-darmstadt.de/hg/aikido/mpegs.html#OSENSEI