...though the "immortal man" movie has already been done with "The Man from Earth".
Which was excellent. Too bad they decided to follow it up with a rather mediocre sequel and the promise of a third to complete the set. :/
And then someone will have the idea of making a set of prequel, The Child from Earth, Attack of the Neanderthals, and Revenge of the Romans, and then JJ Abrams will get involved, and we'll all be doomed.