When you hear someone say "zed" instead of "zee," you probably assume they are British. Not so! It turns out that "zed" is used in a lot of countries, but not the U.S. We just have to be different.
Simon Whistler of Today I Found Out explains why "zed" is used for the last letter of the English alphabet. There are quite a few steps to the American "zee." Hey, do you think the difference in alphabet pronunciation may have something to do with the different ways Americans and Brits pronounce the "e" in "zebra"? -via Geeks Are Sexy