Netflix's Black Mirror is almost always a somber affair, focusing on the worst of what technology can do, as reflected in these sad episodes.

Black Mirror has been a staple on our screens since it launched in 2011 and with fans still watching some of the older episodes, we're taking a look at the best of the best.

Black Mirror rolls around in 1990s nostalgia in a grungy, brutal episode featuring the welcome return of some familiar faces. Spoilers.