You know what I was just thinking? It's really cool to see Laura Dern playing a character like Diane. As you probably know, David Lynch has two female archetypes in all his stuff: the innocent blonde gamine & the exotic dark haired femme fatale. This duality goes quite nicely with his main preoccupation - exploring the darkness lying underneath the placid surface of suburbia. And even though Diane's got that platinum wig, she is most definitely a dark lady. Which is especially neat when you think about her most memorable Lynch role, as Sandy in Blue Velvet. 

Kinda cool too for Kyle MacLachlan that he gets to play both sides of the coin in one character.

Anyway, here's the recap. Enjoy!