Several years ago I was searching for more photography podcasts that didn't focus so heavily on gear or technique, but philosophy and the creative and even theoretical side of the medium, and found On Taking Pictures, a podcast by Bill Wadman and Jeffery Saddoris. It wasn't purely philosophy and theory; they sometimes discussed gear, but in a different way than others I came across. Those discussions were always in the context of the camera being a tool and whether a certain camera or lens or light was the best tool to use to achieve their desired result. It was full of intelligent and thoughtful and thought-provoking discussion, and at times it felt like I was again part of a graduate program. That particular podcast has now been over for a few years now, but Jeffery has continued podcasting, producing three regular podcasts: Process Driven, In Between, and Iterations. You can subscribe to their individual feeds, or subscribe to Jeffery's Everything feed, where you'll get all three as they become available.
Jeffery himself is more a painter than a photographer, and in his latest work, Grid Variations, vol. 1, he made several 6"x6" square pieces that can all be organized and arranged at random, and the possible combinations are endless. It's fun to view the work on his website and imagine different groupings and find how each piece relates to the body of work as whole, but also how they relate to the ones adjacent to it, and those throughout the whole project.
In The New Propaganda, Jeffery uses collage and elements of traditional propaganda to "communicate larger messages and ideas."