Charles Miller finds an interesting class of bugs: the ones that fix themselves spontaneously from one build to another. Well then, are those tests really green? (Revenge of the Anti-Test!)
Laurent Ploix has advice for optimistic developers. "We tend to under-estimate the development charges, we like to forget about some tasks (debug, documentation...), and we tend to believe that a code that works on one machine works everywhere. Almost everybody knows that this is nonsense:" (But it works on my machine!)
James Carr has been encountering tests that only contain assertNull and assertNotNull (TDD Anti-Pattern: The Nullifier).