Evolutionists would do well to examine mutation rate problems with the evolutionary story. The book "Genetic entropy and the Mystery of the Genome" lays these out in a relatively understandable format.
It also contains a useful appendix with [shocking] citations from recent evolutionary journals. For example just the mutation rate of the mitochondrial DNA (only 1 / 200,000th of the genome ! ) should have led "to extinction of the evolutionary line leading to humans withing 20 million years" Loewe, L. 2006. Quantifying the genome decay parardox due to Muller's ratchet in human mitochondrial DNA. Genetics Research 87:133-159.
The book is available from http://ww.creationresearch.org. I have read it and It is excellent.
There is also a new DVD "The Mystery of Our Declining Genes" which features similar material. According to the site:
The science of genetics is proving to be a powerful tool for creationists. Geneticist, Dr. John Sanford, shows that with a conservative estimate of the mutation rate today, and the fact that good mutations are very rare, natural selection causes a decrease in fitness with time. Every organism is decaying faster than good mutations accumulate. This is called genetic entropy and falsifies evolution, but upholds the young earth model. Sanford shows how the computer model, called Mendel’s Accountant, dramatically and powerfully falsifies evolution.