The first was in fact a usual situtation in a train station (Quimper for LEP), but I saw it as an "outcasting" situation... (old vs young, etc.)

Then you have also the photographied photographer (what's he shooting at ? :-) )

Or the more solitary newspaper reader...

Or some famed british architect (Peter Cook)...

Or again the incredibly alert urban writer Françoise Choay..

"What can I do, What can I write, Against the fall of Night". A.E. Housman