A train
I ran into the clock today and needed a photo, so it was time to give in and take a picture of the subway. I was pretty happy that I immediately knew how to get it set up to capture the train while it was moving. It was just changing the focus mode and continuous shooting, which isn't much, but it's reassuring I'm passively thinking about camera settings.
It'd be nice to get a person to stand down the track in the center of the frame, although I can see how that would be construed as irresponsible.