Hi,
When we were moving to abu dhabi the biggest problem was our tv sets that were brand new and selling even one day old stuff in US/Canada means getting throw away price... so we were very worried but luckily we found one website that sells converters from pal to ntsc systems and thank God everything is working perfectly fine here along with one converter for 110-220 volts. so by buying two converters we saved alot more.
So its a good news for anyone moving from north america can bring their TV sets and they will work in middle east.