It seems to me that Breaking Bad has been slowly building this season to an explosive conclusion. While we know there will be 16 more episodes after this season, so many elements are being to built to come to a head by this season's end. Walter and Skyler's relationship is connected by a rickety bridge. Gus and Mike are slowly driving a wedge between Walter and Jesse. Walter's self destructive tendencies seem to be on the way of crossing paths with Hank's growing frustration with his paralyzed state (thus a desire to make himself feel useful). I sense that at least one (if not more) of these elements will reach some sort of conclusion between now and the season's end.
Breaking Bad, much like Justified and Sons of Anarchy when they are at their bests, has created an atmosphere where you feel like at any moment, something horrible is going to happen to any of the characters. This atmosphere has been earned though; it's not a false feeling built from sloppy and impatient writing. It's earned by creating charismatic and compelling characters that the audience is attached to despite the wickedness of their ways. I don't know where Breaking Bad is heading for the rest of this season but I can't wait to find out.