While plenty of filmmakers have made solid careers out of being journeyman directors with no particular thematic focus, the best and most interesting artists do tend to focus in on a single piece of subject matter which interests them the most.
These ideas and themes can be extremely broad and all-encompassing or incredibly niche and singular, but in the case of these 10 filmmakers, they've all made it their consuming obsession over their cinematic tenures.
Whether 50-year veterans of the industry or rising filmmakers still making a name for themselves, these directors have a clear interest in one aspect of life or art above all else, one which has appeared again and again throughout their bodies of work.
In some cases they've pretty much beaten audiences over the head with it over the years, while in others it's a little more subtle and unassuming.
Either way, if you haven't clocked these filmmakers and their favourite talking points yet, look again. If nothing else, it's a great incentive to revisit their celebrated filmographies...
Stay at home dad who spends as much time teaching his kids the merits of Martin Scorsese as possible (against the missus' wishes).
General video game, TV and film nut. Occasional sports fan. Full time loon.