Maybe an interestingly shaped rock that NASA thinks could be that of a petrified alien turd which would support the theory that there once was life on Mars. But further testing must be done on the planet so NASA will then ask for billions more in government funding to carry out the testing.
NASA's big announcement leaked:
Mars was once a thriving alien spacetraveler's rest stop/mustang ranch.
http://www.youtube.com/watch?v=z-qd198SFwo