Creepy image from Mars seems to show small humanoid

It's in the lower left of this high-res image of the Mars Explorer Spirit.




Creepy-looking rock, right? Although, I've never seen a rock on Earth with an arm... Via.

*See also:

-NASA sent a spider into space...and lost it.

-If Steamboat Willie was impregnated by a Facehugger, their child would look like this.