I just finished reading "Why Most Unit Testing is a Waste", a paper (PDF) by James O Coplien.
I spent several years working as a "Quality Lead" in two companies that were writing Operating System code in C++. Unit Testing was "in" at the time (and the engineers would write their own tests and that would make the product better and the process more efficient!) From my background, you might assume (correctly) that this topic is of interest to me.
Not only is this an interesting topic, Coplien's paper is also well written and a delight to read. It's unusual to find such approachable and relatable writing on this topic. I recommend this paper to anyone who writes code or manages teams that write code.