I don't want to harp too much on Hollywood's screenwriters; it's not like they have degrees in astrophysics or anything. They just want interesting plot devices for their stories, and they usually don't have the time or inclination to consult a qualified expert, even if they knew one, to see if their ideas are scientifically plausible. Consequently, they write scientifically preposterous plot devices that require great acts of suspension of disbelief from anyone with a scientific background. Now, I'm not saying that gross misrepresentations well-established laws of physics should keep you from enjoying the programs; I enjoy watching them myself. Just don't be fooled into thinking that there's a scientific clue being exercised in the writing studio, even if the show claims to be a "hard science fiction show". All that said, let's look at a couple of repetitive anti-science cliches that have come out of the TV industry.
This is the supernatural ability of the character Hiro in the NBC series Heroes, as well as a plot point in Star Trek episodes like "Wink of an Eye" from the original series and "Timescape" from The Next Generation.
The plot gimmick in these shows is that time somehow stops or gets slowed tremendously for some characters while continuing normally for others. This means that you have some characters walking around and interacting normally with the environment while the rest are "frozen" by comparison.
Unfortunately, Hollywood writers never consider the consequences of someone experiencing time at a rate hundreds or thousands of times greater than others. As Mike Wong has pointed out on his website in relation to Star Trek, all kinds of things are time dependent that science fiction TV writers don't think about.
For example, the light by which we see is actually time dependent. A 100-watt lightbulb, for instance, is defined by the fact that it converts 100 joules of energy from electrical current into heat and light every second. If a hero alters time so that he's moving 1000 times faster than everyone else, then all the 100-watt bulbs he might be using to see become -- from his point of view -- 0.1-watt lightbulbs, and he's suddenly wandering about in the dark.
Interacting with the environment doesn't stop with sight, either. If you're going 1000 times faster than everyone else, you experience 1000 times as much air resistance as everyone else. From your perspective, the air might feel as thick as water (or worse). Even if your time-bending ability allowed you to move through the air normally, the friction created by your passing would create a super-heated shockwave wherever you went that would blast everyone you walked by (and you, too, when you allowed yourself to return to "normal" speed). If you exert five pounds of force to move an object, that object will actually experience five thousand pounds of force in normal time (which would be sufficient to damage many things you might want to move).
And finally, if you literally "stop time" for everything else, you can't do anything. You can't see, because no light is reaching your eyes. You can't move, because the immobile air is an impenetrable barrier. Actually stopping time would just be an exercise in sensory deprivation (until you suffocate from lack of oxygen, that is).
Offenders in this category include the Star Trek: The Next Generation episode "Transfigurations", the Babylon 5 episode "Mind War", and the B5 TV movie River of Souls. These shows all describe an "evolutionary" change in which living beings of some alien race of the week transform in a bright flash from ordinary flesh-and-blood humanoids into "pure energy" beings who fly away into space (or do other things that only pure-energy beings could do).
To put it bluntly, such a transformation is not "evolutionary". In fact, it's the total opposite of evolution. If the general public got their understanding of the Theory of Evolution from shows like this, it's no wonder that they don't take the theory seriously. Evolution is about tiny variations that accumulate over the course of many generations, not dramatic changes in living examples of a species.
Moral of the Story
If you go to Hollywood for scientific understanding, you become the blind following the blind.