In the 70's and 80's, the most brilliant scientists in the world taped over the original recordings of the 1969 Lunar landing. As a result, we have only fuzzy recordings of the original broadcast. Hollywood technicians are producing the equivalent to eclectic texts by reconstructing images from four different recordings. These videos are being released in commemoration of the 40th anniversary of the landing. This makes an excellent analogy for what textual critics hope to accomplish, although the NASA situation is much more straightforward. An important parallel between the reconstruction of an image and a text lies in the fact that both are made of many different parts (pixels, colors / words, syntax) which form a larger whole. For the most part, the reconstruction does not change the picture, but only makes it clearer.
Associated Press article
View the restored images