Terminator. It's maybe the best bad movie ever. I'm hoping my school's MST3K club will get Mike to come out again so I can give him a copy of it, because it would make an excellent Film Crew project.
They somehow programmed it to see into the past. He would be like "Where did they go?" and then it would show a video of what happened a few minutes ago through his eyes where he is currently standing.
I've yet to see the movie but the cover is vintage 80's schlock at its finest: http://www.moviegoods.com/movie_item.asp?path=%2FAssets%2Fproduct% 5Fimages%2F1020%2F&file=210329%2E1020%2EA%2Ejpg