If you plan on pitching your start up to a Venture Capitalist any time soon, you may want to read Guy's post on presentation rules to live by:

However, I have another theory. As a venture capitalist, I have to listen to hundreds of entrepreneurs pitch their companies. Most of these pitches are crap: sixty slides about a “patent pending,” “first mover advantage,” “all we have to do is get 1% of the people in China to buy our product” startup. These pitches are so lousy that I’m losing my hearing, there’s a constant ringing in my ear, and every once in while the world starts spinning.