I liked the movie Frequency in which the characters were able to change the timeline by two-way communication between different time periods.
I also saw The Philadelphia Experiment 2 which featured a reality in which the Nazis won World War II. The hero must revert this outcome which came about because of a time-traveling experiment. I saw it a long time ago so I kinda forgot about it....
TV series, but the Mirror/Mirror episode of the old Star Trek, where the evil version of Spock rocks a goatee.
shareI feel like TV shows do this better than movies, I suppose because a bunch of stuff is already established and you can just play with the concept. South Park, Futurama, Family Guy, and the Simpsons all have episodes about this kinda stuff and it just happens to be that these episodes are some of the highest rated episodes of their respective show.
Some of my favorites are Go God Go, Roswell That Ends Well, Road to the Multiverse, and Treehouse of Horror V
1.I thought Frequency was good when I saw it, but looking back they really destroyed it since it just ended up being about catching a serial killer. Which is too bad because it could have been a great film!
2. Philadelphia Experiment (1984), the original I thought was good.
3. The Time Machine (1960).
4.Sliding Doors was okay, but better was the original:
5.Blind Chance (the 1987-Poland).
6. Run Lola Run was good.
7. Groundhog Day-- this was okay, but really just a vehicle for Bill Murray's comedy. Again it could have been great
if they didn't just stick with the cheap laughs.
Coherence (2013)
Another Earth (2011)
were both pretty good