I'm a Brit, but I work in Saudi for about 9 months of the year. I have 1 colleague (American) on my camous with a MAC (PBG4) and Know of a Canadian on another campus who also has a Mac (PBG4 also). Plus I know one student here who has a MacMini. Apparenlty ARAMCO, the state oil company is awash with Macs, so my students tell me.
I know one shop which sells Macs, Office One in Al-Khobar, but this only has a couple of G4 towers, an old-plastic framed-cinema display and that's about it.
When not in Saudi I am in Brazil where I know one person with a G4 Tower, and only this year found a Mac reseller, Fnac in Paulista SP. However, I did notice this year that Mac Apple was getting a lot of exposure in the print media in Brazil. The big problem there is that Macs are way out of the price range of most Brazillians. I believe, though I may well be wrong, that there is an Apple strore in a kind of super boutique called Deslu in Sao Paulo. This is a sotre which sells Louis Vuitton and has a helipad on the roof, so you can see where Apple is pitched.
Other than this I am all by myself. However, my parents were so impressed with my 17" MBP thet they are about to buy an iMac.