TED talks are always impressive, but this is one of the best I've ever seen. An MIT researcher wired his home to record 90,000 hours of audio and video. He did this to study his baby son learning how to speak. The data they are pulling out of this experiment is pretty remarkable and has much larger implications than they originally intended.
But this video gets me on a very human level. Some of the family moments, including an audio time-lapse of his son learning to say "water", gave me chills.
[via Boing Boing]