I’ll go first.
Winner:
Breaking Bad, season 3 episode 10, “Fly”
Honorable mention:
Community, season 3 episode 10, “Cooperative Calligraphy”
PS: I’m having a hard time categorizing these as real bottle episodes since they don’t feel cheap or “fillery” at all, but they are at least spatially and plot wise confined.


what is a “bottle episode”?
When a show ran out of money or wanted to spend extra on other episodes they’d either do a clip show or a bottle episode. A bottle episode traditionally uses only standing sets and existing cast under contract, with no special props or costumes.
And because they’re relying almost solely on pure plot / storytelling to carry the episode, they’re often some of the best episodes in an entire series.
They sacrifice plot, and theoretically compensate with character.
Usually called a “bottleneck episodes” because the characters are trapped in a room together. So much of the episode is dialogue based.
Who calls them “bottleneck episodes”? That doesn’t make sense. The episode is a bottle episode because it is bottled up in one location. A bottleneck episode would mean that one episode somehow dictated the maximum speed of the series?
Why would the name suddenly be about the whole series if it’s an episode description.
It’s because episodes tend to be about getting out of the room/place/event. They’re stuck trying to get out.
lol…… no.