To guard against injury...

Never, never, never listen to David Sedaris when you are out running.  The risk of falling over from laughing out loud is just too high.  (The whole clip is good, but the dangeros part starts at about 5:50 and lasts about 14 minutes.)

http://audio.thisamericanlife.org/player/CPRadio_player.php?podcast=http://www.thisamericanlife.org/xmlfeeds/104.xml&proxyloc=http://audio.thisamericanlife.org/player/customproxy.php