Inside No. 9 (2014)

Sardines (series 1, 2014) The British anthology's opening episode takes place entirely in one room, and much of it inside a single wardrobe. At a very posh engagement party, guests play sardines, and more and more of them squeeze in among the coats, each arrival adding another awkward personality to an impossibly tight space. Reece Shearsmith and Steve Pemberton use the cramming as a comic engine, piling up small talk and social discomfort until the black comedy at the end lands with real force. It is the darkest entry here, so expect the laughs to curdle, but no other episode on the list makes a smaller space feel so full.