What sorts of wierd stuff in Halo and Halo2 have you seen or heard of. While I was in the Cairo station I picked up 5 Plasma granades, and when I was driving a tank in Coagulation I flipped it and got killed, I was killed by the Guardians, and in Beaver Creek if you go up to the ledge where you can push the rocks down there is a carving on the wall that reads "Why am I here" and somthing else but its hard to see.