I clicked on the link to the top 5 time travel ways in movies and they actually get one wrong. They bring up The Planet Of The Apes(1968). This isn't a time travel movie per se because Taylor and company are in a warp ship traveling for 6 months while in stasis then were supposed to return to earth. When they woke after crash landing in the lake, they thought they were on another planet(IIRC in the book they do land on another planet). It's Einstein's theory of relativity put into film.