Remember The Grey? The Liam Neeson survival-action movie? It passed audiences by in 2011, making little impression box-office and taking just over $70 million on a budget of $25 million.

Liam NeesonLiam Neeson starred in the survival epic The Grey

It told the story of a number of oil-men stranded in Alaska after a plane crash, who are forced to survive in the wilderness as a pack of grey wolves stalk them in the ferocious weather.

The movie began trending again this week after a Reddit user flagged up the late Roger Ebert's review of the movie. The Grey deeply affected the renowned critic - so much so that he was forced to leave a later screening of another movie.

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"It was the first time I've ever walked out of a film because of the previous film," he wrote his review of The Grey, "The way I was feeling in my gut, it just wouldn't have been fair to the next film... There's time for some conversation among the men, and this film, directed by Joe Carnahan and written by him and Ian Mackenzie Jeffers, treats them as individuals.

"They're not simply a group of victims. The Grey advances with pitiless logic. There are more wolves than men. The men have weapons, the wolves have patience, the weather is punishing. I sat regarding the screen with mounting dread. The movie had to have a happy ending, didn't it? If not "happy," then at least a relief in some sense? Sit through the entire credits. There's one more shot still to come. Not that you wouldn't be content without it."

Ebert was suffering from the effects of cancer at the time of watching The Grey and died in April 4, 2013.

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