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 Walt blows up Tuco's office, listen closely. Mixed in with the screams is a distinct sound of a man shouting "Yeah!" That is a clip of the infamous "Dean Scream." In 2004, democratic presidential hopeful Howard Dean let out an excited "Yeah!" after giving a rousing, over-the-top speech. However, his giddiness and the scream were viewed as unprofessional by the public, and the moment briefly made Dean into a laughing stock in the media. The scream then became an infamous soundbite.
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.