Due either to there not one existing already or my complete inability to use the search function, I thought I could start a thread on podcasts and those we have found interesting.
At the moment I am listening the Blueprint For Armageddon, a 6 part series on WWI and II from the Hardcore History.
It's incredibly addictive in the sense it seems to be more from the point of view of those who went through it, quoting their own accounts of what happened. It takes you away from the typical historian's interpretation on what happened, which is usually slanted with all that has happened since, and really brings home how different these two wars were compared to anything that had gone on before, how unprepared all sides were and how ridiculously long all sides took to react to all of these new ways of fighting. There are only 6 in this series, but they are all at least 3 hours long so lots of good listening.
He has done another one on the Mongols so I will give that a listen next I think.