Another example is the kind of dastardly television trick of increasing the speed of a television program to shorten it and thus increase the amount of advertising space that can be run alongside the program.
https://www.youtube.com/watch?v=z6i1VVikRu0
This video claims that TBS is currently increasing the speed of Seinfeld episodes a whopping 9%, reducing a 25 minute episode to some 22.5 minutes.