Tangential, but related to ihasmario's post, a short youtube video explaining the history (and overusage) of the amen break, a riff during a song that has become the basis for the rhythm of whole genres (in its various forms):
There are very few genres that have remained static. They all change over time as artists try to keep things fresh. Usually when its different enough it will warrant a subgenre under a large umbrella genre. I don't really know much about dubstep but I'm sure its connoisseurs have already broken up the larger "dubstep" genre into a host of subgenres. So when someone says "I hate dubstep," a purveyor of all things step can say "which type? Real original dubstep or x or y sellout subgenre?"
