Watch Monster Planet for Free: How to Stream the Movie Online at 123Movies. . This is from the Astroliner film rides. You go to this ride called the Astroliner, you take a seat, buckle up, and keep your eyes on the screen and the ride moves along with the film. There was Monster Planet and Bermuda Triangle. Stanley M. Strawn did both of these films. Also, keep your eyes peeled for two cameos from two stop-motion movies that the late, but great, David Allen worked on.