Done Valentine founded Sequoia Capital in 1972 and has invested in some of the biggest technology successes like Apple, Oracle, Electronic Arts, NVIDIA, Cisco, Google, YouTube etc.
If you are an entrepreneur or planning to be one, I recommend you to watch this 1-hour video where Don talks about industries, some of the fads (like Nano), and great insights on founders/art of story telling.
A bit of pure capitalism and dozens of insights. Must watch video.