Cutter,
Please bear in mind that all sorts of people read this site.
This sort of thing, even though it has been posted on YouTube, doesn't make it right or safe.
As a person that works with HV as a part of thier daily work, I'd hate to see anyone get hurt.
HV is very unforgiving to those that may accidentally contact it or come within the flashover distance of the voltage source.
Fooling with this sort of thing is bound to end in tears.