YMMV / Breaking Bad S3 E10 "Fly"

• Bizarro Episode: Walt becomes obsessed with killing a fly that has somehow gotten into the meth lab. There are a few moments of legitimate character development and overall series value to this episode, but it for the most part is a big steaming pile of Big-Lipped Alligator Moment.
• Broken Base: This is probably the most controversial episode in the series, due to its bizarre, slapstick premise and the fact it's the only episode in the entire series that could be classified as filler, with fans tending to either love or hate it. Notably, on IMDb, it's the episode with the lowest rating (the only one below an 8/10) and has an extraordinarily high number of ratings (even above episodes like "End Times", "Crawl Space", and "Say My Name").
• Genius Bonus: Walt tells Jesse that he has pressurized the lab in attempt to keep the fly in. Anyone somewhat familiar with scuba-diving knows that subjecting yourself to increased pressure for a prolonged period of time puts you at risk of inducing the condition known as nitrogen narcosis, which causes the sufferer to experience and exhibit symptoms closely resembling those of drunkenness. Aside from the Exhaustion-Induced Idiocy Walt likely suffers from having stayed up all night, this could be an explanation for much for his unhinged and erratic behavior.
• Harsher in Hindsight: Walt almost reveals to Jesse that he watched Jane die, only relenting because they both still cared for each other. Fast forward 2 seasons later, Walt and Jesse become mortal enemies, and this time Walt has zero hesitation revealing that he didn't save Jane, only to break him.
• Hilarious in Hindsight:
  • Jesse gets annoyed at Walt for calling the titular insect in their lab a "contamination" he tells Walt he thought it was something more serious like an Ebola virus. Walt finds Jesse's example to be absurd and asks "what would a West African virus be doing in [the] lab?" There actually was a minor Ebola outbreak in the United States in 2014; very few people were affected but it got a lot of media coverage and generated a lot of fear and paranoia.
  • Combined with Harsher in Hindsight, Walt's obsession with keeping the lab clean from "contamination" in this episode seems even more futile now after Better Call Saul revealed there are two dead bodies buried under it.
• Memetic Badass: The fly. Walt making such a big of a deal out of it and the fact he isn't the one who kills it has lead to jokes of the fly being the one enemy Heisenberg couldn't take on his own.