The opportunitygrrl and Spirit Rover Live Journals are blogs "written" by the Opportunity and Spirit Rovers which are currently exploring the surface of Mars. Pretty funny. Typical Opportunity entry: "NASA woke me up with Whitesnake this morning! That band is like, so old and soooooo not my style!", while Spirit seems much more sullen: "can't i just explore mars in my own way? i don't need this constant ordering around! when do i get to make my own choices, anyway? it's my life, after all."