Batman: The Animated Series has a history of developing amazing back-stories for their villains (Mr. Freeze in Heart of Ice is probably the greatest such story). The time guy in this episode is my second favorite.
This man is paranoid about being on time. One day, during his train ride to office, Mayor Hill tells him to loosen up and delay his afternoon coffee by 15 minutes. He eventually is late for court and loses $20 million! He goes absolutely psycho after this.
I was blown away by this. Think about it. If you were never, ever in your life late for an appointment and the only time you are behind schedule, you end up losing everything in your life, imagine how it would affect you! That is what I love about this series. On some level, you feel sorry for the villains. What the villains do is almost always rational, but never ethical. But Batman is such a beacon of perfection, you know deep down that what the Dark Knight is doing is always right. The Clock King is one more episode in this list of pure awesome.
I give it only an 8 since I found the actual plot to be a bit mundane. The villain himself is quite bland. His motivation is riveting. But his execution is boring.