Movies That Took Ages to Make

5. The Simpsons Movie

It was to be expected that the Simpsons Movie would take a long time to complete, but nine years exceeded even Fox Studios projections. Although the green light was given in 1997, the voice cast was only completed four years later and the animation required a lot of time. However, it was the 160 script rewrites that kept pushing the release date back, until the film finally reached the cinemas in 2007, earning over $30 million on its opening day in the US alone.