I'll start with a brilliant one I found recently.
Its well recorded live sets of Scottish folk bands in various well-known Scottish bar/pub venues. It captures the atmosphere perfectly, even down to the occasional old Scot getting to close to the microphone and having a light conversation w/ someone next too him.
Its great background noise, and makes you feel like you might be there.
I hope you all like it.
https://itunes.apple.com/us/podcast/the-angus-sessions/id151322098
(I highly recommend the 4/29/09 recording in the Caledonian hotel)
Feel free to post your own!