One of the most talked-about scenes in The Revenant involves Leonardo DiCaprio getting viciously mauled by a bear. So, when the Oscar nominee's ursine co-star showed up at this year's Academy Awards ...

Let's start with the bear attack, because it's one of the most amazing spectacles of the movie year 2015. On its own, it's reason enough to see "The Revenant," and there are plenty of other reasons.

Bear Grylls is back once more to review the realism behind survival scenes in movies and television, including 'Those Who Wish Me Dead,' 'Revenant,' 'The Shallows,' 'Yellowjackets,' 'The Wilds' and ...