Eavesdrop

I really like the idea of the CD Eavesdrop: A Wealth Of Found Sound:

"Eavesdrop: A Wealth Of Found Sound is a collection of anonymous recordings found at thrift stores, yard sales, and in trash bins over the past four years. These unaltered tracks come from audio or micro-cassettes, 8-Tracks and home-recorded records. Many of the clips are segments from audio diaries, tape-letters, the sound of road trips, fights, crying, family moments, telephone conversations/messages, or the amusements of children or the mentally handicapped."