Another widespread inaccuracy in TV/Movies is the sniper bullets hitting the target (or missing the target) after you hear the "bang". The thing is, sniper rifles all fire bullets at super-sonic speeds (Mach 2.5 to 3.5) for range/accuracy reasons. In other words, from the point of view (or hearing) of the target, the bullet comes before the "bang". At farthest ranges, it could even take more than a second (or even two) before the sound reaches the target after the bullet already has.
Obviously, in movies there is sometimes an ambiguity as to where the "bang" is supposed to be heard from, whether it takes a point-of-view near the target or near the shooter, or neither in particular. But sometimes it's obviously impossible, like when the bodyguard hears the shot and immediately dives and saves the VIP he's guarding. Or, when you see the target reacting to the "bang" a fraction of a second before being hit by the bullet.
In real life, if you hear the shot, it's already too late.
I guess it might just be too weird for people who are conditioned for the "bang! you're dead" scenario, and would be weirded out by a "you're dead... bang!" situation.