Librivox has audio books in the public domain (nothing new) that are free to listen to. I’ve only come across one “bad” volunteer reader; most are average to very good. Good for if you need to fall asleep, or pass the time, or want to read a classic but don’t want to “read” a classic.
Also, RadioLab is perhaps one of the coolest shows ever. It has interviews, great sound effects, music, and accessible (and interesting!) science. It’s sort of like NOVA for your ears!
@MacBean, I was actually referring to that hyper kid (with a very fake accent) who reads Sherlock Holmes. Hmm…may have come across the woman who reads in monotone…which books does she read from? Do you remember?