Several years ago, I saw a TV movie based on this premise starring Robert Hays (probably best known as "Ted Stryker" in the movie "Airplane!"). Hays and a woman companion traveled back to Nov. 22, 1963, in an attempt to prevent the assassination of John F. Kennedy. If I remember correctly, they ended up going back 2 or 3 times. They kept going back to that day, because each time, the results of their interference set in motion events which were even more catastrophic then the original scenario. I missed the beginning, and never did find out the title of the movie. Has anyone else seen this film?
No but, Nov. 22 is my birthday, lol.
Sounds like the Red Dwarf episode Tikka to Ride.
They finally end up having JFK assassinate mimself from the grassy knoll. "It'll drive the conspiracy theorists nuts..."