Heheh, funny topic this cos here in Blighty it's pronounced Zed, I believe that Canuck's, Ozzie's, English speaking South African's and Indian's, the Irish, the Kiwi's and pretty much every other English speaking country on the planet pronounces it "zed". Only such an insular little country as Yankland would even dare to change the pronunciation of a letter. I mean they even call their stupid version of rugby "football" for fucks sake, even though that name had already been taken and is the most widely supported sport on the planet.
Bloody yanks, always butchering OUR language!!!