There was a SciFi movie that I remember as a child and the only thing I remember is the main lead male was an alien, but I don't think he knew it. There is a scene where it shows all the people who came before him and the image I remember is him walking up into a cave and there were men laid out on platforms going on forever. The closest platform had an older man that explained everything to the young man and I think he was to be the last. Don't remember anything else about it. The bad thing about NetFlix is it reminds you of all the stuff you don't remember.

Sounds like The Questor Tapes (http://en.wikipedia.org/wiki/The_Questor_Tapes).