I'm an evangelist for DoSomething.org, MassChallenge and the NCIIA. My weekend mornings are spent learning more about aerospace and artificial intelligence.
Key to this has been an NSF initiative called I-Corp done in concert with the NCIIA. Blank and Jerry Engel of the Berkley Haas School has put together a terrific curriculum and set of online lectures for validating the business and marketing aspect of a tech startup.