Directed by Werner Herzog and produced by David Lynch, My Son, My Son, What Have Ye Done [I liked it better when it had a shorter title] just released its first trailer (above).  According to signonsandiego:

The project is based on the case of former University of San Diego student and Old Globe actor Mark Yavorsky, who in the late ’70s killed his mother with an antique sword in Pacific Beach, apparently acting out a role from a Greek tragedy.

That’s not a spoiler, by the way.  The movie starts with the murder and then goes into creepy flashbacks.  It’s Lynch and Herzog; would you expect anything else?  Michael Shannon plays an actor playing Orestes in a play [Confused yet?].  Orestes, as we all know, killed his mother Clytemnestra to avenge the death of his father Agamemnon. *closes wikipedia page*  After returning from a trip to Peru (interlaced with plenty of Herzog’s standard man-amongst-or-against-nature scenes), the actor experiences strange delusions that culminate in AWESOME SWORD RAMPAGE!  OO WHA AA AA A!

Also, Michael Shannon’s creepiness manages to overshadow Willem Dafoe.  Kudos, my good man.  Here, let me put that lotion in the basket for you.

~ robopanda [Thanks to theplaylist for the tip.]