Movies:
The Magus, Curse of the Demon, Quatermass and the Pit,
Books:
The Magus by John Fowles, Demian by Hermann Hesse, Black Easter by James Blish,Jewel of the Seven Stars by Bram Stoker, Shikasta and The Sirian Experiments by Doris Lessing, The Three Imposters by Arthur Machen, the works of Clark Ashton Smith