First, watch the scene where Mark Whalberg is on the space station, watching his video postcard from home. On the video, there is a portly, African-American man towards the front of the group. He reminds me a little bit of the principal on Boston Public. Later, after Whalberg has been captured by the apes and taken to Limbo's house, when the humans are being herded out of the cart, the exact same portly, African-American actor appears as a slave. Next time, maybe they should invest a little more money on extras.