Dancing Marines on Amendment XXVI.
On the level Amendment XXVI, there is a way that you can get the marines to tap dance. Just make sure you don't kill any of the marines besides the one that is sitting in the guard room, where you steal the video tape. To get the tap dancing Marines, here is what you do. At the beginning of the level, don't go inside just yet, instead follow the woman with the suitcase. Eventually she will go to the other side of the bus, and drop the suitcase, as soon as she moves away from it, run over and pick the suitcase up, and hurry through the double doors.
Then, after you go through the metal detector, and get past the pesky guards go up, then left into a bathroom, and wait for a waiter or worker to come in, and use the bathroom. Shut the door, and quickly dispose of him. Take his uniform, pick up the suitcase, and go out of the bathroom, and turn left, and go past the marine stationed and through another door. Go through another door on the left, and there should be one marine sitting down facing you, and another one on the other side of the wall, go over to the one that's facing the wall, and plunge a poison syringe into his neck, then take his uniform. Then go over a little and look next to a open window, and there should be a key card, and a video tape for you to steal.
Then leave that room, by the door you used to come in, and keep heading straight until you reach a door with a keycard thing next to it.( make sure you still have the suit case.) Then using the keycard open the door, and continue through the hallway. You should come upon a set of stairs, so go up them and through the door. You should now be on the right side of a room with a fire place a little ways ahead of you, and a big red carpet on the floor on the left. And there should be two marines in that room. Go up to the wall on the left side of the fire place, and aim by pressing the Left Analog stick, and throw the suit case at the wall 3 times, making sure that it hits the wall each time.
After you throw the suitcase at the wall, go stand on the left side of the red carpet, and all the marines should line up on the right, and start their dance!
Some Marines are slow to get there, so give it a minute. If you didn't kill anyone besides that one marine, then you should be good. I find it fun to walk through the center while they are dancing.
Congratulations, you have now seen the dancing Marines easter egg.
Added by: cheating-is-good May 9th 2008, ID#7591