Event Horizon
In this movie, the ship Event Horizon dissapeared for 7 years after testing out an experimental gravity drive; which would teleport the ship to a location in much less time than before. Unfortunetly, the ship travels to another universe. From the sounds of it, the ship and it's crew went right to Hell.
At one point in the movie, the main characters find the last log recorded by the crew, which shows them torturing themselves horribly. ONE GUY WAS EATING HIS OWN ARM!!!!