At a time of ever-decreasing budgets in television production, it's perhaps useful to remember that perfectly good television can be made consisting just of people shouting in corridors.
Don't believe me? Here are the classic television drama genres reduced to their base constituents.
DRAMA: people shouting in corridors.
COMEDY: people falling over in corridors.
COMEDY/DRAMA: people shouting, then falling over in corridors.
GRITTY DRAMA: ugly people shouting in corridors.
POLITICAL THRILLER: people shouting whilst walking quickly down corridors.
SCIENCE FICTION: people shouting at robots in corridors.
MYSTERY: Someone is shouting in a corridor. But who?
PERIOD DRAMA: people in wigs shouting 'Sirrah!' in wood-pannelled corridors.
SOAP: teenagers shouting in corridors, pause at end - TO BE CONTINUED.
SINGLE CAMERA COMEDY: cameraman has to leap back as person falls over in corridor.
STUDIO AUDIENCE COMEDY: fake laughter as people pretend to find it amusing that person is falling over in corridor for third time in row.
'EDGY' COMEDY: blacked-up people shouting 'rape', then falling over in corridor.
PORNOGRAPHY: people shouting sexily in corridors.
JAPANESE HENTAI ANIMATION: woman has unfortunate encounter with tentacle in corridor.
That's enough corridors.