During the Train Robbery mission, when your assigned to either knock or kill the station cheif, do which ever you please and then get the access code from the computer, which will open the door. After the door is open pick up the body of the cheif and then drop it right in front of the vault looking door in the hallway. The station cheif will stop in mid air and then start spazzing out, but will still be alive.
Also in the cruise ship mission you can do the same thing when the guard comes into the room at the start of the mission. Wait till he opens the door and then grab him from behind (or knock/kill doesnt matter). Then drop him more or less to the side of the door that leads to the small shower. He will spazz out and his legs will fly all over the place. (Note: if your trying to get trust for the station cheif opposing objective, you can knock him out if and then open the door which will give you trust to NSA, then if you want you can turn around and kill him, which will give you trust for JBA).
Added by: jagg Aug 6th 2008, ID#8576