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1.
An excellent film about a man who suffers from a condition where he can't make new memories. With a memory that constantly fades, he struggles to discover the one responsible for raping and murdering his wife and putting him in this condition. He gathers clues in Polaroid photos and tattoos; each one bringing him closer to the truth.

The unique style and complex plot is what makes this film a masterpiece. It is down backwards, making the viewer experience that same type of confusion that the main character feels.

It is practically impossible to understand this film by watching it only once. You may have to see it 3 or 4 times to figure it all out. But that's what makes it so good. Each scene is a piece of a puzzle and you have to figure it out as you watch.

Never before has their been such a great mystery/suspense film. If you haven't seen it and you like that kinda stuff. You are missing out!
"So what am I doing? Looks like I'm chasing this guy...no, wait... He's chasing me!"
by Citizen Insane January 02, 2005
 
2.
from the film memento: the act of tattooing reminders on one's body
why do i always stress so much? i need to memento reinhold niebuhr's "serenity prayer"
by geek.neo May 14, 2010
 
3.
The act of having to write everything down because you will not remember anything without documentation.
If I don't memento this, I'll never remember.
by Memento Lady November 12, 2010