Wow, found the script online and read it, it's pretty crazy. While I wasn't entirely surprised that they killed off Walther, I really didn't see the whole crying game twist coming with him. Jesse joining the DEA was maybe a bit of a reach, and the whole "angry police captain yelling at him to get in line" is a bit cliche, but when he ignores the captains advice, heads for mexico, and single-handedly wipes out the entire mexican cartel in a hail of .50 BMG gunfire, limbs flying and heads exploding, I was cheering the whole way. This is going to make Rambo look like a kiddie film.
And don't worry, these aren't spoilers - it's the way that they do it that's just, damn. So good. And Skyler is Jesse's mom.