I'll probably get hate for saying this since these appear to be SF recommended: Pea Coats. I keep seeing them everywhere. They are the ultimate unisex coat, bland looking, boxy, non-distinctive, often old-man like, accepted unconditionally on styleforum, and readily available as a clothing staple at J. Crew and Banana Republic. Last winter I recall eating lunch at a restaurant in an area where there are many financial services offices. I was shocked at how it was like invasion of the pod people. Well over 80% of the people eating there all looked the same-- tan chinos, some kind of button down dress shirt, black square toe dress shoes, and a pea coat! It was as if every wanna be MBA management asshole had congregated together in a single place. It was so nauseating that I made a mental note not to go back.