Oh man... I just finished listening to the last one again, then wondered what on earth I could listen to that would be roughly an hour.
EPISODE 41!
Great timing.
Oh, to answer the actual question - there was mention that there were further Yazuza games (leading to the machine gun incident) other than the one Tom and Jason partook in.
Were any of them recorded?
Otherwise, I think the ones people have already suggested sound cool.