Growing up in a small town in North Texas in the 1970s & 80s, I heard all the ones mentioned in this thread pretty regularly, including the eeny meeny, miney, moe rhyme.
Everyone used the term "wetback", including (and maybe especially) the hispanic kids. One kid in middle school, who was well-liked and popular, was half-white/half-black. Everyone called him Higger or Wigger, to his face, but not maliciously (as weird as that sounds). If it bothered him, he didn't show it, he just laughed along.
When I was a kid, the n-word was forbidden in our house, and I never heard my parents use it. Unfortunately, in my Dad's grumpy old age, he has let one fly now and again.
My grandpa, an Irish-Catholic who lived in Kansas City, used to refer to one of his neighbors as a "good nigger." He genuinely like the guy, but it was as if he felt it necessary to qualify it -- i.e., "a good guy (for a black person)."
Not long after Obama was elected, my other grandpa remarked to me that "all black and brown people are the same, and now we've got one in the White House."
My grandma, German through and through, once said to me "Can you believe Joe Lieberman could be vice president?" I replied with something like "well, what's so bad about him, grandma?" She stared at me for a few seconds, wide-eyed, then leaned in close and whispered: "He's a Jew!!"