I use captions for TV and home movies. That being said, I was truly shocked the first time I watched a DVD on my Mac--the captions were utterly beautiful. Nice, anti-aliased font, partially transparent font background, and all of this is customizable!
Technology is sufficiently advanced at this point that there is really no reason not to expect pretty captions, but why isn't it the norm? Is it greedy to expect pretty captions when they are so obviously possible? Surely a company today pitching a 255-color computer would be laughed out of the market, so why is my state-of-the-art, big screen HDTV showing me such crude captions? Think of how much time and effort are put into making things aesthetically pleasing these days--why not captions?