By now there's a pretty good collection of talks from Startup Bootcamp at MIT: http://www.youtube.com/startupbootcamp

Some notable speakers:

    - Drew Houston (Dropbox) both in '09 and '11
    - Patrick Collison (Stripe)
    - Alex Polvi (Cloudkick)
    - Leah Culver (Convore)
    - Chris Wanstrath (Github)
    - Bill Clerico (WePay)
    - James Lindenbaum (Heroku)
    - Kyle Vogt (Justin.TV)
    - Adam Smith (Xobni)
    - Angus Davis (TellMe)
    - Paul English (Kayak)
    - Alexis Ohanian (Reddit/YC)
    - Dan Bricklin (VisiCalc)
    - Stephen Wolfram (Wolfram Research/Alpha)
    - Bob Metcalfe (PARC, 3M)