For music, try The Word magazine podcast, full of tales from yore and usually well told.
For books, try the Book of the Week from the Guardian or the BBC World Service Book Club. Both usually get top-notch authors on who are good talkers as well.
Playback on RTE is a good catch-up of the week on RTE, otherwise as others have posted for current affairs.
For bite-sized laughs, both Gift Grub and Nob Nation podcast their sketches.
All on iTunes with a little look around
Also, for audiobooks, Audible.com were offering one free download a while ago, not sure if this is still current. Lord of the Rings dramatised by the BBC is available at €11.99 per book, each book is a 4 hour plus listen, if that's your bag.