- Enforced Method Acting: Bob Odenkirk admitted in an extras video that Saul's visible terror at Walt intimidating him in his office was quite genuine, as Bryan Cranston legitimately frightened him when he walked straight up to Bob while in-character.
- Troubled Production: The scene at the junkyard with Old Joe and the magnets proved to be troublesome to film, as Larry Hankin had dyslexia and had difficulty remembering his lines, much to the frustration of Bryan Cranston. Thankfully, the second day of shooting went much smoother after the director smoothed things out with Hankin behind the scenes.
- Writing by the Seat of Your Pants: The Flash Forward opening scene was written before much of the rest of Season 5 was drafted, and so even for the writers there wasn't much context to anything presented. According to Vince Gilligan, at the time they hadn't even figured out who Walt was going to be using the M60 machine gun against. This also created an issue that had to be resolved where Walt wasn't wearing the watch that Jesse gave him and he proceeded to wear the entire rest of the season.
Trivia / Breaking Bad S5 E1: "Live Free or Die"