Amazing!  Just discovered image from the Spirit Mars Rover shows what appears to be a small Martian going down a hill and looking back at the rover as it moves away. 

Check out the pics:

Wide angle of entire pic - shot 1

Narrow angle showing left view of pic - shot 2

Super close-up of the Martian - shot 3

Now to be honest with you I don't understand why this is big news since the photo taken by the same rover back in 2004  clearly proved that Martian exist on Mars - for those of you that missed that famous NASA Picture click here to see it