Personally, Last Shift (2014). It was a smaller budget movie that came out awhile back that not many seem to know about. One of the only movies that actually got under my skin in recent years showing budget isn’t always everything. The director remade it recently with a bigger budget but you can skip the remake it’s not as good. Any other recommendations?
pi 1998 by darren aronofsky… obsession, paranoia, gaslighting, pattern seeking… maybe visually jarring for its high-contrast b/w but lends itself to the texture of delusional clarity. story of a man whose independent research yields some numerical anomaly and he becomes driven by the need to re-create this outcome.