Although it's true that we never really know what we'll come across in a given day, experience usually gives us something of an idea.
For instance, the building I work in is downtown, so most of the time that I step off the bus, I can mostly expect to see a bunch of people going about their days and not paying much attention to me. And really, that's the way I like it.
Less frequently, I'll see some people playing music or ranting about Jesus. Although they're less common sights, they're still ones I recognize. I don't know them by name, but at this point, I might as well.
Sometimes, however, we can find ourselves coming across someone who makes a unique impression on us before seemingly disappearing completely. We may not know where they came from or went, but they were definitely there and they definitely made sure we were wide awake that day.
This list is for them.