I work in high-tech so I'm no stranger to computer nerds, as they might have been called during the era in which the movie Computer Chess is set -- the 1980s, when computers were beginning to become portable. On the surface, this is a movie about "computers versus humans" in a chess tournament, but filmmaker Andrew Bujalski provides his actors with an environment for their characters to expand beyond nerdy stereotypes, giving the movie thoughtfulness and depth.
Computer Chess takes place at a weekend tournament where teams match their computers' best chess programs with one another, to see which is superior. The winning team will pit their computer against a human chess master. The programmers aren't the only people holding events in the hotel, however, and a weekend couples-encounter retreat provides some amusing contrast.
The film is shot and structured as though it were a documentary or found footage -- Bujalski even used a vintage video camera to shoot in black and white, to great effect. I wouldn't call it a "mockumentary" because it implies a level of screwball spoofery that isn't present. The "action" often pauses for characters to discuss whatever's on their mind, resulting in a slower pace than you might expect but also more fascinating characters and insights. The humor here is mostly subtle and sporadic, except for the couples-encounter scenes and a subplot about a character who can't find a place to sleep.