For me this too was the best episode of BCS, because they finally showed that Chuck disease about eletromagnetic radiation is in fact, pure bullshit, and as Jimmy said "Chuck developed the condition as response to the divorce from his wife." . Only the creators from Breaking Bad to make one episode that has literally no action, to be the best episode of the entire serie, and not just that, but makes you get totally mind-blowing by the end of it.
What is worst in Chuck is that he hates Jimmy for somethings that he even had nothing to do about it, some example being, people often likes more Jimmy than Chuck, because he is more funny, but that it's just not the fault of Jimmy, it's just his personality.
And the worst thing : Chuck blames Jimmy for the death of their father, and continues to carry as if this was true. But he does not see that he is wrong in a lot of things beside those, like : Not telling Jimmy that their mother called for him, minutes before to die, making a memorie that could be good for Jimmy, to never happen, privating the final moments and wishes from his mother, simply because of jealous.
The phrase that Chuck said for Howard, "Let justice be done though the heavens fall.", ironicaly fits perfect for the end of this episode, Chuck finally paying for what he have done, being exposed for what he truly is.