How does one build the character of a villain such that the players (playing heroic characters) hate the villain as much as possible without detracting too much from the quality of the game?
What motivations, habits, etc should the villain have to make them particularly despicable? Should the villain be based off of the PCs in some way or is it more effective to base the villain off of some objective standard of villainy? If the former, in what way should the villain be based off of the PCs?
In order to back up your answers, please either a) provide examples of published works making use of the technique/method you recommend, b) cite real-world RPG experience evidencing the success of your technique/method, or c) cite published material on the subject supporting your position (DMGs, Academic papers, Dragon articles, blog posts, etc)
The best answer will provide unique insight into the causes behind player responses within the character-driven framework, provide critically successful example works exemplifying the particular method advocated, and provide a source where for information on the method/subject, if desired, can be acquired.