The Scene: Juliette Binoche and Jeremy Irons contort themselves into some sort of mockery of an art installation on the floor.
Look Away When: The pair start convulsing in time. Ick. Ick. Ick.
The Scene: Helena Bonham-Carter seduces Steve Martin’s dentist so that she can get her mitts on some painkillers.
Look Away When: Martin’s trousers hit the floor. This is funny in an entirely wrong kind of way.
Poison Ivy (1992)
The Scene: Sylvie (Sara Gilbert) makes her way home from hospital, only to discover dad (Tom Skerritt) diddling her best bud Ivy (Drew Barrymore). Jiggle, jiggle.
Look Away When: The thunder starts up. Mother nature ain’t happy at this union.
Savage Grace (2007)
The Scene: Barbara Daly Baekeland (Julianne Moore) straddles son Antony (Eddie Redmayne) in a truly shocking case of incest-in-motion.
Look Away When: Barbara starts fondling Antony’s crotch before complimenting him on his choice of underwear and unzipping his trousers. Nooooo!
The Scene: Avner (Eric Bana) takes his stress out on his poor wife during a sex sesh that’s unintentionally funny.
Look Away When: Bana’s eyes look ready to pop out of his skull.
The Man Who Fell To Earth (1976)
The Scene: Even weirder than the bit where a teenager uses Rip Torn’s penis as a microphone is this clinch between David Bowie and Mary-Lou, who both get loaded, then naked and start playing with a gun.
Look Away When: Mary-Lou gasps “It's cold!” We don’t care if the screen’s black, just look away!
The Scene: William Baldwin and Sharon Stone gyrate against a pillar as really bad pseudo-porn music pulses in the background.
Look Away When: The pair’s humping makes it look like Stone might knock herself out on the pillar.
The Scene: Matthew Davis and Kristanna Loken go 10 rounds in an over-aggressive encounter that looks more like a wrestling match.
Look Away When: Loken throws Davis against the metal bars in a fit of passion.
Life Is Sweet (1991)
The Scene: David Thewlis covers Jane Horrocks’ breasts with chocolate sauce and licks it all off while she snarls at him. Okaaaay.
Look Away When: Thewlis starts tying Horrocks up.
Before The Devil Knows Youre Dead (2007)
The Scene: Philip Seymour Hoffman grunts over a crushed-looking Marisa Tomei. This is something we really didn’t need to see.
Look Away When: Any time Hoffman’s on screen. Talk about an eyeful.