21. Marvin's Room (1996)
The movie: When Bessie (Diane Keaton) discovers she has leukaemia, she attempts to rebuild her relationship with her sister (Meryl Streep) and her two sons.
Was it even nominated: Keaton was the sole recipient of a nomination in the Best Actress category.
What it should’ve won: Keaton, Streep and Leonardo DiCaprio are all fantastic, while Scott McPherson could've done with a Best Adapted Screenplay for his emotional but never saccharine scripting.
20. About Schmidt (2002)
The movie: When his wife unexpectedly dies, Schmidt (Jack Nicholson) goes on a road trip to his daughter's wedding.
Was it even nominated: Nicholson and Kathy Bates were both acknowledged by the Academy before being unceremoniously dumped in favour of Adrien Brody (The Pianist) and Catherine Zeta-Jones (Chicago).
What it should’ve won: Alexander Payne deserved a Best Director gong, and Nicholson put the effort in for what should have been his fourth Oscar.
19. Leon (1994)
The movie: Orphan Mathilda (Natalie Portman) is taken in by the titular assassin (Jean Reno) when her family's killed by Gary Oldman's maniac cop.
Was it even nominated: Weirdly, Luc Besson's movie didn't receive a single nomination. We can't think what possibly offended the Academy…
What it should’ve won: Best Actor for Oldman. Seriously. Why didn't he get this?
18. Shame (2011)
The movie: Sex addict Brandon (Michael Fassbender) traipses through New York looking for meaning (and conquests).
Was it even nominated: In a move as shocking as some of this movie's content, the Academy completely ignored Shame's existence. Prudes.
What it should’ve won: Best Cinematography, naturally, though Fassbender deserved a go at the Best Actor gong for one of the bravest, most affecting performances of the year.
17. What's Eating Gilbert Grape (1993)
The movie: Drama following the Grape family - among them Gilbert (Johnny Depp), who has to look after younger brother Arnie (Leonardo DiCaprio).
Was it even nominated: DiCaprio received a much-deserved nom for Best Supporting Actor.
What it should’ve won: DiCaprio definitely should have taken the Supporting Actor prize home. And he's still yet to bag that elusive Oscar over 20 years on, but that should all change with The Revenant...
16. The Shining (1980)
The movie: In Stanley Kubrick's adaptation of Stephen King's novel, Jack Nicholson heads to an isolated hotel with his family, where he starts seeing ghosts. Then he loses his mind…
Was it even nominated: Of course it wasn't. The Shining was released as a horror movie, and the Academy's famously snooty when it comes to that particular genre, except in the case of The Silence of the Lambs.
What it should’ve won: Best Actor. Could Nicholson have beaten eventual-winner Robert De Niro (Raging Bull)? Guess we'll never know…
15. Psycho (1960)
The movie: Norman Bates goes on the rampage in this classic shocker, which tackles everything from cross-dressing to cold-blooded murder.
Was it even nominated: Another Best Director nom for Hitchcock failed to bag him the award, while Janet Leigh garnered a Best Supporting Actress nod.
What it should’ve won: Leigh definitely deserved gold - she made what should have been a thieving harlot into a likeably flawed heroine you can't help but root for.
14. How to Train Your Dragon (2010)
The movie: High-flying book adaptation set in a world of dragon-slaying Vikings where Hiccup (Jay Baruchel) befriends a dangerous dragon.
Was it even nominated: Yep, it earned two nominations - Best Animated Film and Best Original Score.
What it should’ve won: Best Animated Film. If only a little movie called Toy Story 3 hadn't been released that same year…
13. Stand by Me (1986)
The movie: Four friends go on a quest to uncover the body of a missing boy.
Was it even nominated: Raynold Gideon and Bruce A. Evans received a nomination for their screenplay, but nobody else even got a look in.
What it should’ve won: Best Adapted Screenplay, obviously, though that none of its impressive young stars received a nod is a travesty. River Phoenix in particular could easily have gone for gold.
12. Memento (2000)
The movie: Guy Pearce suffers from short-term memory loss, which isn't going to stop him tracking down the man who killed his wife.
Was it even nominated: It received just two nominations for Best Film Editing and Writing. Not exactly the highest of praise.
What it should’ve won: Best Film Editing, without a shadow of a doubt. With its non-linear narrative, the movie still manages to hammer its point home, and when the credits roll you feel exhilarated rather than confused.