One movie most may not have watched was Philidelpha Experiment. It was based on a real experiment that has been sensationalize by some hard core believers, (nuts), The experiment was suppose to see if they could make the ship the Eldrige, invisible to radar in WWII, but has since taken on a life of it's own by saying they wanted to make it totally invisible to sight.
It did make several interesting shows for late night radio with Art Bell. I was fond of calling Coast to Coast, the Far Side Show because of the nature of the topics, callers and guests to the show . Art even had a person that said he was actually one of the sailors or scientists who was caught up in the time travel and has since taken several trips to the future. But by the show date he was getting a little to old to really tell it.
But back to the movie, the first one was a keeper. It stared Michael Pare(?), someone I just found out was one of the students in Greatest Amer. Hero. Because of the experiment, he was thrown into 1985(?), and they opened up a rip in time and the future was in danger of being sucked into the vortex. So, Michael had to stop it by going back to the original ship and closing down the project.
Don't really bother with the sequel, it really WAS a second rate show. They took a stealth fighter back to Nazi Germany, hoping to change things I guess.