Some films have pivotal scenes, even if the film is not that great.
I remember the film 'Altered States' has a brilliant scene where the lead character 'regresses' using an isolation tank into a cave man... and jumps to life again with blood on his lip. Scary film, shame the ending was rubbish.
We get a lot of creationist debates on here and I was wondering to the creationist folk make of regressing into a 'pre human' condition?
Youtube has crashed so I can't find the scene will post when I can.
Do you have any pivotal Sci Fi movies / Scenes?