In case you missed it, Scott Berkun has posted an interview with me about The Innovator's Sourcebook on his blog.  http://www.scottberkun.com/blog/2010/the-innovators-sourcebook/  We talk about the book, problem finding and the innovation efforts at Apple, Google and Microsoft.  Anyways, if you haven't had the chance, check it out!  Also, thank you Scott for doing the interview.  I had a lot of fun and the site is busier than ever.  If you haven't read Scott's books, or his blog, go do it now at  www.scottberkun.com.  Myths of Innovation will change the way you think about the topic of innovation.