I liked Walt throughout the first 4 seasons. Yes, he did some really shitty things, but there was always a part of me that wanted to see him succeed, mainly because those seasons had him overcoming some sort of greater threat (Cancer, Tuco, Gus, what have you). In season 5, there hasn't really been a major threat, and Walt has just been acting like an irrational dick. It almost feels out of character, I don't know. He's just morphed into such a douchebag that I can't sympathize with him anymore. Most, if not all, of his actions in previous seasons had some sort of reasoning behind them, but this time around I'm finding myself unable to understand what the fuck is going through Walt's mind. He just seems so one dimensional now (herp derp gotta have all the monies nobody can get in the way). It's almost a little disappointing to me that the writers have decided to go down the route of transforming Walt into a complete monster, incapable of acting at all human. He's not even making smart decisions like he used to be capable of doing.
Anyway, this episode was still fuck awesome. Sucks that Mike is gone so early into the season, but there was basically nowhere else to take the character outside of having him fly away to a distant land.