Andy Hertzfeld, one of the original programmers of the Macintosh operating system, appeared in an interview on NerdTV. In the interview, which is available online, Hertzfeld talks about the history of the Macintosh, his love of Open Source software, and his new book — “Revolution in the Valley: The insanely great story of how the Mac was made.” MacMinute interviewed Andy Hertzfeld last February. [Thanks to MacMinute reader Rami for this news tip.].