Overview of systemic errors in science-- wishful thinking, lack of replication, inept use of statistics, sloppy peer review. Probably not much new to most readers here, but it's nice to have it all in one place. The article doesn't address fraud very much because it may have a small effect compared to unintentionally getting things wrong.

Account of a retraction by an experiment's author Doing the decent thing when Murphy attacks. Most painful sentence: "First, we found that one of the bacterial strains we had relied on for key experiments was mislabeled."