Timecode (2000)

On a quadruple-split screen, four separate, improvised storylines -- each shot in a continuous, feature-length take and set against a backdrop of the Los Angeles film industry -- unfold simultaneously in real time, building to a final, climactic moment in which they all unexpectedly come together. Among the 20-odd main characters, four stand out: a philandering movie executive and his exasperated, angst-ridden young wife; an aspiring actress who's having a furtive affair with the exec in the hopes of furthering her career, and her wealthy female lover. As their four stories unravel, each drawing other characters into their physical and emotional orbit, they begin to intertwine in unexpected ways.