What’s the first thing that comes to your mind when you think of MIT? I took a poll and got “techy,” “nerd,” “pocket protector,” “book worm,” and “indoor nerd.” Well, based on our list of MIT graduates, the responses should have been more along the lines of “roboticist,” “inventor,” “venture capitalist,” “computer scientist,” and “geolocation expert.”

We spoke with Brad Feld, who told us about his college antics and love of science fiction, and Colin Angle, who invented the Roomba — yes, the autonomous robot vacuum cleaner.  Aaron Iba is a partner at Y Combinator and a well known prankster, and Saul Griffith is a kite boat pioneer and inventor. And finally, Othman Laraki is Twitter’s director of geolocation.