I've been close...
CCTV angle:
http://www.break.com/index/office-worker-goes-absolutely-insane.html (http://www.break.com/index/office-worker-goes-absolutely-insane.html)
Another angle, plus sound:
http://www.break.com/index/office-worker-meltdown-second-angle.html (http://www.break.com/index/office-worker-meltdown-second-angle.html)
Sounds like they are speaking Russian or something.
A nice crack of a tazer from the security guard can be heard in the second one, that's why the guy eventually stayed down.
Rofl nice bit of footage and yeah you can hear the cracks of the tazer (two times I think).
Yikes. More yikes. I don't think I can stay that kinda mad for 3 minutes.