This episode surprised me. I thought it was going to be super boring with the WWII references, but the sheer power of the Golem was pretty cool. Also I really liked that actor that played the Golem. Sam and Dean are getting cosy in their new digs, and it seems really cool. Maybe this will put them over the top with new spells and lore against new monsters and bad guys. Further the character of the young rabbi was pretty humorous but his knowledge of the Hebrew ways was a bit tricky, as he seemed to be a screw up, but never explicitly said he didn't know things besides the Golem, being able to write his name in Hebrew and even read the book he destroyed. Also, the necromancer's arsenal of spells were a bit lacking. I expected some crazy spells and raising the dead to fight for them or something, not darts and people that looked normal but were actually "undead."