Alien planets that don't seem to follow basic evolution. I am in no way a biologist, but I know enough about basic evolution to know that, for example, all vertebrates on earth have a somewhat similar bone structure with four limbs (with the rear two merging for the aquatic animals). There is no reason that life on other planets wouldn't have similar evolutionary paths, but if different, all vertebrates on the planet should share that difference.
For instance, Avatar drove me nuts on this. Every freaking mammalian species on the planet has six limbs... except for one. I kept waiting for the reveal that the Na'vi were also alien to the planet, but no dice.
George Lucas is particularly bad on that one as well. His planets tend to be populated by species that couldn't possibly be related to each other.
Also, I spent one summer helping a theater buddy set up the lighting for a small college theater. When we were done, we headed to Vegas for a weekend to celebrate and I caught myself in strip clubs trying to see what kind of lights they were using and how they were positioned.
For instance, Avatar drove me nuts on this. Every freaking mammalian species on the planet has six limbs... except for one. I kept waiting for the reveal that the Na'vi were also alien to the planet, but no dice.
George Lucas is particularly bad on that one as well. His planets tend to be populated by species that couldn't possibly be related to each other.
Also, I spent one summer helping a theater buddy set up the lighting for a small college theater. When we were done, we headed to Vegas for a weekend to celebrate and I caught myself in strip clubs trying to see what kind of lights they were using and how they were positioned.