grumm – I think zattoo is a little different, although there's no definitive answer anywhere and I doubt it will ever be tested in the courts, it possibly does require a licence.
I only bought a TV a few weeks ago for the first time for 5 years to be able to play Thomas the Tank Engine DVD's for Jr. I use the TV occasionally to watch live TV so now have a licence whereas previously I didnt but did use online viewing occasionally.
If we got rid fo the TV again, I would probably still get rid of the licence as it's pretty impossible for TVLicencing to police PC viewed TV whether local relay or international streams etc. The TV Licence is a dead licence walking.