With the theme of from My Front yard/back yard/front window etc. perhaps a good inspiration on documentary from that very place is the book "The World From My Front Porch" - LarryTowell. http://inmotion.magnumphotos.com/essay/frontporch perhaps it would be a good thread if there isn't one already
As Newbie I'm not sure without trolling forever into the past to see what's been themed before.
I think it's actually a good theme, we become very used to our immediate environments and probably don't see what is changing each time we look around it.