I apologize in advance for my lack of decorum, but...
WHAT THE FUCK???
Agreed, it was an excellent episode, but--- Nazi aliens? They'd better f'n have something planned to wrap that up without exploding my brain.
My guess is that's the cliffhanger they were planning before they knew they were renewing for a new season, and figured it'd generate a write-in campaign of extraordinary magnitude.
Three more weeks of Deadwood, then no more good TV 'til Six Feet Under picks back up.
You have our gratitude.