I've been amused by the complete lack of discussion, in all the usual places, of this experiment. To summarize, in 2004, geneticists found some fairly long stretches of DNA that are identical among humans, rats and mice. This means that these genes have not been subject to any viable copying errors or mutations over millions of years. Since as far as we know all genes are equally subject to change, that would seem to indicate that these genes do something rather important such that any change is selected out. Because genes that important must to something interesting, scientists excised them out of some lab mice to see what they would get. What they got was, so far as they could tell, perfectly normal mice. The ultraconserved genes don't seem to do anything at all.
To put it in a nutshell, if this is right than the theory of natural selection has to be wrong. One experiment is obviously not enough to bring us to that conclusion and yet we might want to get ready for the possibility that one of the pillars of modern thought is about to come crashing down.