10 Great Movies Everybody HATED Making

10. Gravity

Alfonso Cuarón's 2013 sci-fi masterpiece Gravity is an incredible feat of effects-driven filmmaking.

Cuarón originally planned to complete the project within a year, but due to the mind-boggling complexity of the VFX it ended up taking almost five years of his working life, while the shoot itself required absolute precision from its cast and crew.

Case in point, Robert Downey Jr. was originally signed to star as astronaut Matt Kowalski - a role eventually played by George Clooney - but bailed after it became clear that his improvisational acting style clashed with the strict requirements of such a carefully controlled project.

The experience for stars Clooney and Sandra Bullock was uncomfortable, to say the least. With most of the film's imagery being computer-generated, the actors spent up to 10 hours a day inside a 9x9-foot mechanical rig intended to simulate a space shuttle, while being directed by Cuarón via earpiece.

Bullock said of the harrowing experience:

"It was just frustrating, painful and isolating... I wanted to kill [producer David Heyman] and Alfonso regularly. So all of your hate, and your anger and your rage, you just give forth in your work and hope it translates onscreen."

Ultimately Gravity went on to win seven Oscars, including Best Director, and grossed over $700 million worldwide.

Given that Bullock managed to secure a mind-boggling 15% share of the movie's first-dollar box office grosses in addition to her $20 million salary - not to forget a Best Actress Oscar nomination to boot - she's probably happy with how it all turned out.