How about the obscene ammo capacities in Equilibrium? And the semi and fully automatic pistols with no muzzle climb? Good movie, had some valid concepts that can be translated to reality, but reloading in that movie was just done for emphasis.
Not to get off topic, but if you picked apart the plots of some firearms-related movies, you'd also see lunacy in how characters react to situations. For example, in The Matrix, people taking their good sweet time to answer the phone and get to safety, or ignoring the bum in the subway station despite knowing full well he's the ONE opportunity for an agent to get the drop on them.
On the original poster's comment about left-handed sharpshooters, being left-handed does not convey any real disadvantage when firing an unadapted gun, except for those with highly unusual cartridge ejectors or those with offset scopes. Even offset scopes are not a big deal in most cases.