"Spiritual but not religious" is a phrase that's become increasingly common these days. What exactly the phrase means depends on who lays claim to it. For some it means they still believe in church teachings but prefer to sleep in on Sunday. For others (more than the former category, probably) it means a belief in angels, reincarnation, and a host of quasi-Christian/New Age syntheses.
At the height of his first wave of success in the 1970s David Bowie signed to star in Nic Roeg's adaption of the seminal 60s sci-fi novel, The Man Who Fell to Earth. I'm not sure what I think about the movie itself, but it seems to be an unacknowledged landmark in the ongoing AstroGnostic revelation. As well as a film rife with signifiers that resonate much more strongly than what Roeg put onscreen.