I was recently reminded about this phenomenon when a friend of mine visited my studio to record a few demo intro tracks. David has a wonderful South African accent and I asked if he wouldn't mind helping me out. He said, "Sure, no problem." After the very brief recording session, he came out of the booth area to watch me edit the tracks and hear his takes through my monitors. He noted how it's always strange to hear your recorded voice, because it sounds so different from how we hear ourselves through our heads.