As I've posted previously I have been captivated with The Shadow Radio Drama from the 40's. I've been deligently buying episodes over the last month or so. I now have 81 episodes, which will take be 1.5 days to listen to (according to iTunes).
Highly recommend these shows to those who enjoy the old days.
Addendum: (6/1/10) I know have all the episodes as published on iTunes, 104 episodes, 2 days (48 hours) of listening enjoyment.