I was outside trying to take pictures of a rainbow at dusk in Sedona. The bats were out and I started to try to grab a shot of one of them as they flew by in low light, just playing around and bored, mostly.
I was having issues getting the damn camera to focus. It took me a few minutes but I realized I needed to do the same thing I would do for a night shot: put it in manual and focus on infinity. Once I did that? BOOM. The Batman.