Very unusual and very cool episode. Pretty much the entire episode was just Walt and Jesse in their cook lab....chasing after a fly. You'd think that this would be boring huh? Not at all. This was a moment for Walt to contemplate how everything got so messed up and come face to face with the guilt that has been eating away at him about Jesse's girlfriend Jane. I was certain that Walt was going to tell him that he was actually inside the bedroom and that he could have saved her. He doesn't. Solid episode.