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.
Ever seen Man From Earth? Technically it’s a movie but the whole thing happens in one location.
Sweet. This reminds me of that movie that “follows” a man sitting in a zoom call while the world is under attack or something.