The latest episode of How I Built It features Cory Miller talking about various iThemes products and the philosophies that go into those products. And Joe also interviewed Carrie Dils, who is always so full of knowledge; she shares her story of building OfficeHours.fm.
Another podcast I enjoyed recently was Matt Medeiros's interview with Rob Walling on building and maintaining SasS businesses. Rob recently sold Drip, an email marketing SaaS.
Finally, Brad Touesnard and Pippin Williamson share some marketing tips, among other things, in the Apply Filters podcast.