I listened to that podcast, too. I enjoy a lot of the Superman podcasts, even if I disagreed with many of their assessment of Dean Cain's Superman. (L&C was my gateway drug to all thing Superman.)
I wouldn't say that Dean Cain's Superman is the best, but his Clark definitely is.
They definitely help make the commute to work more enjoyable. I've also found an iOS program ("Capti") that easily lets me import fanfic and then read will read it aloud to me. I've been enjoying some of the old classics on the archive that I hadn't found time to sit down and read. I'm currently listening to Yvonne Connell's excellent "Fear of Discovery" series.
Ken has mentioned doing something like that, too. I think that's above my tech skills at the moment. I'm amazed I figured out how to do podcasts. I stumbled across this podcast when looking for the radio show podcast you mentioned on an earlier post. I'm currently listening to him describe and read the Golden Age Superman comics in podcast, which I'm hoping will increase my Superman knowledge.
Although, at 45 minutes a comic, it might be slow going.