The last three posts in this thread just blew my mind...lol. Seriously, I didn't even think about Walt taking on the various characteristics of the people he killed, but it's so blatantly obvious it can't be simple coincidence.
And yes, I absolutely loved the fact that they dived head on into the confrontation between Hank and Walt...I seriously didn't expect that in the first episode, and when it happened me and my wife were both floored, because they could have dragged that out (like most shows would have) through half this final season, but BAM, you get this ultimate show down right off the start, and that makes me fearful for Walt's safety, because Hank isn't one to simply sit back and let him do that, he's going to come full force after him now to protect everyone, including Walt's kids who he's obviously taken a fatherly love for now.
It's going to be one hell of a ride this season if this episode is any indication.
I have a feeling Hank will kill Jesse, Walt will kill Hank, Skyler will end up being killed by a competing drug cartel (maybe the guys who were trying to buy the methlanol from Mike and Jesse)...and in the end, Walt will be left alone (his kids will end up with Skyler's sister, i can never remember her name), and I agree with the comment above, suicide almost seems fitting to the direction of the story.
Those are just my theories.