[nuclearwast]

This is the plot of the movie "The Man from Earth" It's well rated, I would say it's worth at least a watch.

[jacquesm]

And when you watch it do not expect an action movie, it is more of a brain tease asking the 'What if?' question in a pretty effective way. I liked it a lot, but most of the people that I recommended it to did not and found it boring.