10 Most Amazing Practical Movie Effects Of The 2010s

10. The Arm Scene (127 Hours)

So believable that it reportedly caused people to faint while watching, 127 Hours' infamous arm-amputation scene is painfully detailed and near-impossible to watch without looking away from.

A true story about one man's sheer determination to survive, 127 Hours ends with Aron Ralston (James Franco) amputating his own arm with a pocket knife, a moment that's shown in full, gory detail, with little left to the imagination.

It's difficult to watch, in large part due to the extremely detailed practical effects work. In order to achieve the desired effect, the design team built a lifelike arm - complete with muscles, nerves, and some crushed fingers - for Franco to work with in the scene.

And the result speaks for itself. You can feel every second of Ralston's pain, and the scene was so realistic that it even garnered praise from several real doctors.

Oh, and that moment where he twangs on one of his nerves is absolutely horrifying.