What is “human?” That’s the basic question posited by Ridley Scott’s visionary science fiction opus, release in 2007 in a 25th-anniversary “final cut,” the director’s third pass at the film.

Based on a novel by Philip K. Dick and set in the dark, rain-soaked Los Angeles of 2019, the tale follows “blade runner” Deckard (Harrison Ford) as he pursues and attempts to terminate four “replicants” – genetically-engineered humanoids – who have violently escaped an off-world colony and returned to earth. Deckard becomes increasingly conflicted about his murderous job and doubtful about his own identity, as he falls in love with a replicant (Sean Young) and begins to realize that his prey may be more human than he believed.

In one critical scene in Two-Lane Blacktop, Kris Kristofferson’s “Me and Bobby McGee” is heard in the background. Its famous refrain runs, “Freedom’s just another word for nothing left to lose.” Therein lies the core of Monte Hellman’s intimate, artfully photographed road movie about liberty, competition, friendship, and commitment.

Its archetypal characters bear no names. Two taciturn dragsters, the Driver (James Taylor) and the Mechanic (Dennis Wilson), scour the countryside in a scarred, souped-up ’55 Chevy. They pick up the Girl (Laurie Bird) on the road. Somewhere outside Los Angeles, they encounter an aimless yet aggressive nomad (Warren Oates) piloting a new canary-yellow muscle car, who challenges them to a race to Washington, D.C., with pink slips as the prize. They roll. Everything changes.

Yes, it’s silly. For their second film with director Richard Lester, the Beatles abandoned the black-and-white, documentary-derived naturalism of A Hard Day’s Night for luscious color and a goofy plot spoofing the secret agent thrillers of the day. But Help! exhibits the energy and charm of its predecessor, thanks to its musical stars, who get a chance to cavort on some exotic locations.

The outline of the droll script may have been written on the back of a postage stamp. The Fab Four, playing “themselves” as before, are stalked by members of an Eastern cult, whose sacrificial ring has fallen into the hands (onto the hand?) of one Ringo Starr. An inept but nonetheless thoroughly mad scientist also covets the gem. The Beatles run from London to the Alps to the Bahamas in a fruitless attempt to elude their pursuers, abetted by a smitten priestess of the cult.

Francis Ford Coppola said of Apocalypse Now at its 1979 premiere in Cannes, “The way we made it was very much like the way the Americans were in Vietnam. We were in the jungle. There were too many of us. We had access to too much money, too much equipment. And little by little we went insane.” That madness is what you see in Hearts of Darkness, an extraordinary documentary about the film’s torturous, quixotic shoot.

With her own crew, Coppola’s wife Eleanor documented her husband’s protracted struggle to complete his epic about the Vietnam War; her footage is the basis of Fax Bahr and George Hickenlooper’s feature. She came away with an intimate picture of the feature’s near-catastrophic progress, or lack thereof. Shooting in the Phillipines, Coppola replaced a lead actor after filming began; saw helicopters on loan from Ferdinand Marcos’ army diverted to fight rebels in a real civil war; witnessed the destruction of a main set in a ruinous typhoon; and was forced to halt production when one of his key players suffered a near-fatal heart attack. And then the volatile Marlon Brando showed up, overweight and unprepared for his role as the monstrous Colonel Kurtz.

The tale is simplicity itself: A young man (Richard Gere), his girl (Brooke Adams), and his spunky kid sister (Linda Manz) flee trouble in Chicago and find harvesting work on a wheat farm owned by a wealthy Texan (playwright-actor Sam Shepard). The couple, who are masquerading as brother and sister, learn that the farmer is terminally ill, and the young man encourages the woman to marry the farmer so that they can claim his fortune after he dies. Confusion, suspicion, disaster of near-Biblical proportions, and tragedy ensue.

Were it not for Manz’s deadpan voiceover narration, this pictorial masterwork could almost be a silent film – director Terrence Malick’s spectacular images tell the story. Shot by Nestor Almendros, who won an Oscar for his painterly cinematography (with an assist from the supremely gifted Haskell Wexler), Days of Heaven is among the most gorgeous features ever made. Filmed mostly in twilight’s “magic hour,” the film is bathed in hues of lavender and gold. It’s a rapturous visual poem that shocks the eye with its beauty.