I can't recall if I mentioned this YouTube channel or not, but it is on Youtube and consists of interviews of mostly down and outers in America. 

The interviewer is a former photographer for Apple and he goes around interviewing all sorts of people and so many of them are very fascinating. 

Not all of them are depressing and some are so remarkable when it comes to people that have had really tough lives but have remained resilient and hopeful.  Some will just break your heart, too.  But some really good stuff......