There was a great short story by Ted Chiang about the biases that surround physical attractiveness. In the story, people could have a brain implant to suppress the brain’s ability to judge other's beauty (or lack thereof). It was pretty thought-provoking and not the typical predicable dystopian parable that most brain modification stories fall into.

I find it fascinating that people seem to care so little about this particular bias when compared to other types of discrimination.