according to TVNZ in this computerworld article, they will be enforcing a no record option on all their HD broadcasts
"“It is a characteristic of this interface that no recording can be carried out or, in other words, you will not be able to record any HDTV signal. This is a worldwide requirement of those agencies that own the distribution rights to HDTV content,” says TVNZ.
Any recording of the high-definition digital signals will have to be done in standard definition, says TVNZ."
I guess no one has told this guy about HTPCs :)