Movies that will make you question sanity and challenge intellect.

Here is an comprehensive list of movies that I have watched and in the end, made me question the very existence of everything that ever existed. These movies are well out of the ordinary and will take you on a roller coaster of intellectual thinking!! These are the thought provoking movies, must watch for the keen brain!!
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1.
DMT: The Spirit Molecule (2010 Documentary)
    1 2 3 4 5 6 7 8 9 10 7.4/10 X  
An investigation into the long-obscured mystery of dimethyltryptamine (DMT), a molecule found in nearly every living organism and considered the most potent psychedelic on Earth. (75 mins.)
Director: Mitch Schultz
 
2.
The Fountain (2006)
    1 2 3 4 5 6 7 8 9 10 7.3/10 X  
As a modern-day scientist, Tommy is struggling with mortality, desperately searching for the medical breakthrough that will save the life of his cancer-stricken wife, Izzi. (96 mins.)
 
3.
The Jacket (2005)
    1 2 3 4 5 6 7 8 9 10 7.1/10 X  
A Gulf war veteran is wrongly sent to a mental institution for insane criminals, where he becomes the object of a Doctor's experiments, and his life is completely affected by them. (103 mins.)
Director: John Maybury
 
4.
Life in a Day (2011 Documentary)
    1 2 3 4 5 6 7 8 9 10 7.7/10 X  
A documentary shot by film-makers all over the world that serves as a time capsule to show future generations what it was like to be alive on the twenty-fourth of July, 2010. (95 mins.)
 
5.
Waking Life (2001)
    1 2 3 4 5 6 7 8 9 10 7.8/10 X  
A man shuffles through a dream meeting various people and discussing the meanings and purposes of the universe. (99 mins.)
 
6.
Enter the Void (2009)
    1 2 3 4 5 6 7 8 9 10 7.3/10 X  
A U.S. drug dealer living in Tokyo is betrayed by his best friend and killed in a drug deal. His soul, observing the repercussions of his death, seeks resurrection. (161 mins.)
Director: Gaspar Noé
 
7.
Inception (2010)
    1 2 3 4 5 6 7 8 9 10 8.8/10 X  
A thief, who steals corporate secrets through use of dream-sharing technology, is given the inverse task of planting an idea into the mind of a CEO. (148 mins.)
 
8.
Pi (1998)
    1 2 3 4 5 6 7 8 9 10 7.5/10 X  
A paranoid mathematician searches for a key number that will unlock the universal patterns found in nature. (84 mins.)
 
9.
Mr. Nobody (2009)
    1 2 3 4 5 6 7 8 9 10 7.9/10 X  
A boy stands on a station platform as a train is about to leave. Should he go with his mother or stay with his father? Infinite possibilities arise from this decision. As long as he doesn't choose, anything is possible. (141 mins.)
 
10.
Shutter Island (2010)
    1 2 3 4 5 6 7 8 9 10 8.1/10 X  
A U.S Marshal investigates the disappearance of a murderess who escaped from a hospital for the criminally insane. (138 mins.)
Director: Martin Scorsese
 
11.
Requiem for a Dream (2000)
    1 2 3 4 5 6 7 8 9 10 8.4/10 X  
The drug-induced utopias of four Coney Island people are shattered when their addictions run deep. (102 mins.)
 
12.
Dark City (1998)
    1 2 3 4 5 6 7 8 9 10 7.7/10 X  
A man struggles with memories of his past, including a wife he cannot remember, in a nightmarish world with no sun. (100 mins.)
Director: Alex Proyas
 
13.
Mulholland Dr. (2001)
    1 2 3 4 5 6 7 8 9 10 8.0/10 X  
After a car wreck on the winding Mulholland Drive renders a woman amnesiac, she and a perky Hollywood-hopeful search for clues and answers across Los Angeles in a twisting venture beyond dreams and reality. (147 mins.)
Director: David Lynch
 
14.
Dogtooth (2009)
    1 2 3 4 5 6 7 8 9 10 7.3/10 X  
Three teenagers live isolated, without leaving their house, because their over-protective parents say they can only leave when their dogtooth falls out. (94 mins.)
 
15.
Moon (2009)
    1 2 3 4 5 6 7 8 9 10 7.9/10 X  
Astronaut Sam Bell has a quintessentially personal encounter toward the end of his three-year stint on the Moon, where he, working alongside his computer, GERTY, sends back to Earth parcels of a resource that has helped diminish our planet's power problems. (97 mins.)
Director: Duncan Jones
 
16.
Planet Earth (2006 Mini-Series)
    1 2 3 4 5 6 7 8 9 10 9.5/10 X  
Emmy Award-winning, 11 episodes, 5 years in the making, the most expensive nature documentary series ever commissioned by the BBC, and the first to be filmed in high definition. (48 mins.)
“ Surprising enough, this series will show you the beauties of this planet as you might have never seen before! ” - shift_future6
 
17.
Memento (2000)
    1 2 3 4 5 6 7 8 9 10 8.5/10 X  
A man creates a strange system to help him remember things; so he can hunt for the murderer of his wife without his short-term memory loss being an obstacle. (113 mins.)
 
18.
Sunshine (2007)
    1 2 3 4 5 6 7 8 9 10 7.3/10 X  
A team of international astronauts are sent on a dangerous mission to reignite the dying Sun with a nuclear fission bomb in 2057. (107 mins.)
Director: Danny Boyle
 
19.
Eternal Sunshine of the Spotless Mind (2004)
    1 2 3 4 5 6 7 8 9 10 8.3/10 X  
When their relationship turns sour, a couple undergoes a procedure to have each other erased from their memories. But it is only through the process of loss that they discover what they had to begin with. (108 mins.)
Director: Michel Gondry
 
20.
Fear and Loathing in Las Vegas (1998)
    1 2 3 4 5 6 7 8 9 10 7.7/10 X  
An oddball journalist and his psychopathic lawyer travel to Las Vegas for a series of psychedelic escapades. (118 mins.)
Director: Terry Gilliam
 
21.
Hannibal (2001)
    1 2 3 4 5 6 7 8 9 10 6.8/10 X  
Living in exile, Hannibal Lecter tries to reconnect with now disgraced FBI agent Clarice Starling and finds himself a target for revenge from a powerful victim. (131 mins.)
Director: Ridley Scott
 
22.
Spun (2002)
    1 2 3 4 5 6 7 8 9 10 6.8/10 X  
A drug dealer introduces one of his customers, a 'speed freak', to the man who runs the meth lab. A crazy three-day adventure ensues. (101 mins.)
Director: Jonas Åkerlund
 
23.
The Butterfly Effect (2004)
    1 2 3 4 5 6 7 8 9 10 7.7/10 X  
Evan Treborn suffers blackouts during significant events of his life. As he grows up, he finds a way to remember these lost memories and a supernatural way to alter his life by reading his journal. (113 mins.)