Seth Godin links to a funny, yet insightful list of tips which is quite helpful for one presumably planning to become a Successful Evil Overlord. My favs are:
#12. One of my advisors will be an average five-year-old child. Any flaws in my plan that he is able to spot will be corrected before implementation.
#17. When I employ people as advisors, I will occasionally listen to their advice.
#24. I will maintain a realistic assessment of my strength and weaknesses. Even though this takes some fun out of the job, at least I will never utter the line "No, this cannot be! I AM INVINCIBLE!!!" (After that, death is usually instantaneous.)
#29. I will dress in bright and cheery colors, and so throw my enemies into confusion.
#46. If an advisor says to me "My liege, he is but one man. What can one man possibly do?", I will reply "This." and kill the advisor.
#61. If my advisors ask "Why are you risking everything on such a mad scheme?" I will not proceed until I have a response that satisfies them.
#74. When I create a multimedia presentation of my plan designed so that my five-year-old advisor can easily understand the details, I will not label the disk "Project Overlord" and leave it lying on top of my desk.
#85. I will not use any plan in which the final step is horribly complicated, e.g. "Align the 12 stones of power on the sacred altar then activate the medallion at the moment of total eclipse." Instead it will be more alone the lines of "Push the button"
#100. Finally, to keep my subjects permanently locked in a mindless trance, I will provide each of them with free, unlimited internet access.