Trivia: There is a scene in this episode where Walter angrily tosses a box of pizza in the air in such a way that the pizza exits the box and lands on his roof. Before filming this scene, the crew had wondered how many takes would be required to achieve the desired result. Bryan Cranston nailed it on the first try.
Trivia: When Robert Forster (Ed, or "The Disappearer") stops by the cabin to drop off supplies to Walt, he tells Walt that his (Walt's) house has since become somewhat of a tourist attraction, and a fence has been built around it. Funny thing is, in real life that is exactly what has happened to that house since Breaking Bad. Tourists come to that house and take photos, and the owners have had to put up a fence to keep people off their property. Before the fence was put up, some people went so far as to throw a pizza on the roof, like Walt did in a previous episode.