Here in Canada, like down in the USoA, we've had a few episodes of Flash and Gotham. I've been watching Arrow since it started, and likely will continue that with Flash. I usually don't remember such things, but when Barry Allen visited Starling City, I pretty soon realized he was the Flash (must be from having watched the previous Flash TV series).
I stopped watching Gotham after 2 episodes. It seemed that the Penguin character was going to be the main star in Gotham, and, since he is a slightly-deformed psychopathic killer, I really wasn't interested. The future CatWoman is really cute though. :-)