Putting on the Dish (2015) on Netflix

London, 1962. Two strangers strike up a conversation on a park bench about life, love, sex and the hostile world they find themselves in as gay men. The topics might be commonplace, but the language isn't, because the two men are speaking in Polari - a mostly extinct form of gay slang used in Britain in the first half of the 20th century. Shedding light on a little-known and fascinating slice of gay history, this film is a moving and darkly comic exploration of oppression, resilience and gay subculture in 1960s England.