Nightcrawler
The 2014 film Nightcrawler was a gloomy reflection of what unethical journalism would create. In preparation for his role, Jake Gyllenhaal dropped a ton of weight and wound up looking deathly sick, as least compared to how he usually looks.
Jake took up the role of Lou Bloom, a journalist whose job it was to go to tremendous lengths in order to be the first person to arrive at every heartbreaking scene. Nightcrawler only had a budget of $8.5 million, but it would go on to rake in over $50.3 million at the box office.