goldenecitrone
post tenebras lux
Depends who you ask - I thought the whole curve from the Nile Delta up through Palestine, Jordan, Lebanon and Syria was pretty much the same arabic (I remember this being called shams - i.e. sun - arabic but I just googled that and came up with nothing) - but I've only really spent time in Egypt. Egyptian tv soap operas have been pretty massive in the arab world so I thought this was now the standard (although things like the hard 'g' still sound a bit harsh to me).
Not just TV, but film, music and literature.