Ensley F. Guffey, has written about the episode (and his squee-worthy interview with director of photography Michael Slovis!) over in his blog, and I strongly encourage you to read that. As for me, I'm going to discuss just a couple of aspects of this episode - you'll have to buy Wanna Cook? when it comes out next spring for all the juicy details!
Naturally, there be spoilers ahead.
In the present day, Hank knows that "W.W." isn't Willy Wonka and it's not Woodrow Wilson, either. Life changes for everyone when he steps out of the bathroom with Walt's copy of Leaves of Grass. But knowing isn't enough for Hank - he has to prove it and he painstakingly builds his case. Walt learns that Hank knows and, while he may try to intimidate his brother-in-law with his advice to "tread lightly," Hank's having none of it.
So who's the weak link? Lydia, who can't cook meth as good as the now-retired Walt? Skyler, who's willing to run Lydia off? Saul, who intends to not go to jail? Or is it Jesse, who's throwing money away in a bid for some sort of late-night redemption?
That house didn't get empty because Skyler decided she didn't like the paneling.
Seven to go.