Despite what you might see on C.S.I. (or CSI: Miami or CSI: NY), bite mark evidence is not so reliable, the New York Times reports. I am sure the same can be said of many other types of evidence relied upon in these shows -- even if one were to assume that the average police crime lab has anywhere near the level of sophistication and lack of time and resource constraints as the labs on these shows. (Of course, they can be fun to watch anyway.)