There seems to be a gaping hole in the plot (or at least in Walt's line of thinking. Maybe they address it in a way that makes it seem like less of a hole next season, which would make this criticism moot, but we'll see). You can't tell me that there aren't 1,000 chemists--ranging from people with good jobs in pharmaceuticals to college students to other high school teachers--who would cook meth in that lab for $1 million a month. It might not be as good as Walt's recipe, but it would certainly be better than anything else on the street made using brake fluid and WD-40 and whatever else goes into meth, plus Gus doesn't have much competition as it is. It seems to me that Walt shouldn't be as important as he's being made out to be (or as he thinks he is, depending on how it plays out). I really liked this season...there were a couple of episodes that were hit-or-miss, but overall a good season. Gus's cleaner (can't remember his name), is one of my favorite television characters ever. He's right up there with Omar from The Wire as far as anti-heros go.