I think "nigger" and "kike" may forever remain on the non-PC list. Even if we are so fortunate to leave the PC obsession behind us. Why is there no unspeakable word for white people? I mean crackers? Is any white person actually offended by being called a cracker? Anytime I have ever been called a cracker I have failed to contain myself and laughed out loud. Whitey? Okay, I fail to find that one offensive in the least? WASP? Sure, nothing. I am sure there are some more offensive words for white people, but I can't think of them and I doubt I would find them offensive. Maybe it is that white people just don't offend so easily (white males at any rate).

Edit:

Added quotes. Wouldn't want to be too unPC.