Directly after the scene in which Anakin is getting directions to the Tusken Raider camps from the Jawas, it cuts to a shot of a huge rock spire on Geonosis. It starts at the peak and the camera slowly works its way down to the bottom, where Obi-Wan Kenobi is. About halfway down the spire, there appears to be a man (or something humanoid) standing on a ledge (It's fairly small, you really need to be searching for it). The spire seems to be a CGI (Computer Generated Image), I wonder if Lucas had a friend who wanted to be in the movie and they pasted his image on the rock or something... All I know is that there appears to be someone standing there.