Thats an awesome shot! I'm too nervous to ask characters like this if its ok, heh heh. One day I'll work up the nerve and get a great photo like this.
Its interesting how at first, you see the beard, the hat, the coat, the dirty wall, and all the other details. But if you stop and think about it for a minute, you realize you're missing the entire subject of the photo - there's a human being in there. There's a man there who probably has an amazing tale to tell, and knows more of life than we can ever imagine. Who knows what he's been through, what roads he's traveled, what far fetched events have fallen on that wizened countenance?
Something to think about, best to not focus on technicalities every once in a while.
Laters...