To acknowledge Dr. King's holiday, I'd like to offer this link to a post I did last year. I would love to visit Atlanta again, or maybe take a trip to Memphis, to learn even more about Dr. King, his life, and the evolution of his mission.
If you haven't read his famous "Letter from a Birmingham Jail," it is a beautiful, gripping essay and I humbly suggest taking a little time to read it.
Lastly, one of the best broadcasts on Dr. King that I have seen is "Citizen King," presented by PBS's American Experience. It's available on DVD. I recommend it for your Netflix queue.