I just read the UK thread and thought "wow!'. Unfortunately I've seen very little usage of .tv. There is a ski show (local production) that uses .tv and I've seen Mattress.tv - thats about it from what I have seen and my eyes are wide open for it.
When the Cricket tour was in India recently bcci.tv was constantly on the screen 6 hours a day,
actually we have 2 televisions on where I work and bcci.tv was on 1 screen and on the other at the same time was fuel.tv.
snow.tv is a weekly program on Saturdays.
Fox8.tv is popular
There are others as well, it is getting seen here and there.
need more developed sites though.
It gets used a bit on tv (small % of tv shows, shop at home ads etc). The most pominant user of .tv used to be foxtel cable tv though they reverted to a .com.au a few years ago.