Just caught this 2007 film – ”The Man From Earth”. A low budget movie that – from the description – I didn’t expect to want to sit through, but the script – by the late Jerome Bixby – was actually quite enthralling. No action at all, really, it was all in the dialogue; it would actually work very well on the stage. Some of the acting was a bit hammy, but the actor in the leading role pulled it off nicely, so all else could be forgiven.
As a professor bids goodbye to his colleagues, he admits that he is actually a centuries-old caveman.