Adapted from the beloved philosophical novel by Herman Hesse (Steppenwolf), filmmaker Conrad Rooks’s Siddhartha (1972) chronicles the titular Indian prince (played by Shashi Kapoor) as he seeks enlightenment. Siddhartha leaves behind the material comforts of his parents’ world, meets the Buddha, and scales the heights of erotic consciousness in the naked embrace of Simi Garewal. That last part will make your Sid harder.