Aaron Paul (Jesse Pinkman) revealed that in the scene where Tuco Salamanca throws Jesse through the screen door of his house, he actually hit his head so hard that he got a concussion. Raymond Cruz (who plays Tuco) didn't realize this and carried on throwing him to the ground and hitting him in the ribs and face, mistaking his genuine pleas to stop for scripted acting. The take made the final cut.
When Tio is trying to get Tuco's attention, he is ringing his bell in a specific pattern, three rings in quick succession followed by three rings spaced out and three more quick rings, which is Morse Code for S.O.S.
Raymond Cruz kept the platinum grill, The producers gave it to him. "They encased it in Lucite and they gave me the grill as a parting gift. I have it on top of my mantle."
First episode to take place over just one day.
At Tuco's Jesse and Walter are wearing their signature red and green respectively.