I am quite impressed with Ben Affleck's directorial debut. I think he put together a great movie: dialogs are meaningful, regional accents are done right, the plot is full of twists and turns, and, more important, the acting is first rate. Pretty much everybody does very well -- Amy Ryan, who was unknown to me, kicked ass as a trailer-park trash mom whose little daughter goes missing. Casey Affleck (I always liked him) is also very good as a private dick out to help the search for the missing girl. Ed Harris, who can be excellent, was a little off -- I'm blaming Affleck; but, still, great job.
As expected from trailer-park crack-whores, the mother homo-curses a few times (mostly 'faggot'). She is pretty much alone though; so, the light for the gays is not that bad.