YMMV / Sherlock S1 E2 "The Blind Banker"

• Big-Lipped Alligator Moment: At the start of the episode, John is at a supermarket, while back at the flat, Sherlock is fighting a fat scimitar-wielding assassin wearing a vaguely Arabian costume. By the time John gets back to the flat, the man has been defeated and Sherlock doesn't even mention it. We never find out who this guy is, why he attacked Sherlock, or what happened to him between the time Sherlock knocks him out and John gets back home. It's hinted he was after a big yellow diamond Sherlock had in his possession at the time, but it's completely disconnected from the main plot either way.
• Bizarro Episode: The episode has no connection at all to the two it's sandwiched between (besides a very off-handed hint about Moriarty being The Man Behind the Man), and is widely viewed as a low point of the show with its uncomfortable Yellow Peril villains being played absolutely straight. It stands out so much that some even suspect that writer Stephen Thompson wasn't given any kind of guidance by Steven Moffat and Mark Gatiss and was just left to write his own story about a modern day Holmes and Watson.
• Retroactive Recognition: Gemma Chan played Soo Lin Yao, before becoming a big name in Humans, Crazy Rich Asians and Eternals. She has since been asked for comment on her role in this episode.
• Special Effect Failure: The villain fires a gun repeatedly in a museum. There's no sound of bullet impacts, and nothing at all gets hit, even when he's firing directly towards Sherlock while he's surrounded by glass cases. While it's not beyond the realm of possibility the bullets missed everything that would have broken visibly, it does strain belief and indicate they were probably running around in the real museum just after hours and couldn't move anything around to set up prop cases.
• Technology Marches On: Strangely, this episode is the victim of this despite being written during the time it was set. The Chinese triad needs to leave messages spray painted on walls instead of texting, can paint over it in a matter of minutes but doesn't take someone taking a photo into account, and mistakes John for Sherlock based on him picking up tickets for him but doesn't think to look at pictures of the pair.

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