I remember the first time watching the Holiday Special and thinking, "it's almost over." after about 20 minutes. Then it went past 30 minutes, and I thought, "Oh it must have been an hour special." then it went past an hour. That's when it dawned on me that a network actually devoted 2 hours for this.
This to me went way beyond bad to just plain evil. It should be used for torturing prisoners to make them talk.