Like finishing the pizza when you've had all but one slice.

There's also the Todd/Lydia business that clearly needs some sort of resolution.   And good lord, they played the Stevia note yet again, suggesting that somehow or other Lydia's gonna get a steaming cup of Ricin.   But if that's not a red herring (it could be) then who, and how?   

The person who could most easily give Lydia a fatal dose is Todd.  But he's also the least likely one to ever to do it.    And yet... Todd's right/wrong meter is so bizarrely calibrated that I could see circumstances arising where he might do it. 

Finding out how they'll resolve this particular plot thread is what intrigues me the most, actually.

Yeah, obviously Walt's bringing some firepower to the party - but if he doesn't also kill 'em with chemistry I'll be very disappointed.

Walt goes to jail, where in prison he gets the health care he needs to treat his lung cancer.

I categorically don't think that's gonna happen. It's clearly set up as Walt going in lone-wolf style and going out in a blaze of glory.

I have no idea what's going to happen in the final hour or how this could possibly be wrapped up in that amount of time. It feels like we're still introducing wrinkles to the story -- Skyler and the DEA is like a mid-season complication, you'd think.

The only expectation I have is that I'm going to be left wanting more, which is the way to go out I guess. The end of this episode could almost have been the finale (the music seemed to think it was) if not for the dangling promise of ricin and guns.