If you've ever shot a handgun, you know that it's not as easy as it looks. The tiniest imprecision will send bullets a-flying to the farthest recesses of the target -- if they hit it at all! Fortunately, movies are a break from reality, which is why we get to enjoy wildly inappropriate firearm techniques. My personal fave is the sideways gunshot, dubbed (and mocked) as the "kill shot" by a frantic Steve Carell in the 2010 comedy "Date Night." Featured in such iconic films as 1966's "The Good, the Bad, and the Ugly" and 1993's "Menace II Society," shooting sideways looks cool and tough and all that, but losing access to a gun's sight makes it pretty much impossible to aim and fire with any precision at all [source: Palmer].
Movies can go right on ahead making regular old actions look more interesting, though. Viewers enjoy the whole willing suspension of disbelief concept. In real life, however, it's probably best to leave the firearm trickery to trained military, 'mkay?