The Memory Blocks

Joel Barish, heartbroken that his girlfriend underwent a procedure to erase him from her memory, decides to do the same. However, as he watches his memories of her fade away, he realises that he still loves her, and may be too late to correct his mistake.

An experiment on a simpleton turns him into a genius. When he discovers what has been done to him he struggles with whether or not what was done to him was right.

Thomas Jacobs invents a way to watch people's memories from the inside. Going against his morals, he accepts an offer to enter a heroin addict's memories to literally see if he committed a crime. However,a malfunction causes his consciousness to become trapped inside the criminal's mind. He remains a prisoner in the addict's memories for more than four years until he discovers the possibility of escape.

Leonard Shelby is tracking down the man who raped and murdered his wife. The difficulty of locating his wife's killer, however, is compounded by the fact that he suffers from a rare, untreatable form of short-term memory loss. Although he can recall details of life before his accident, Leonard cannot remember what happened fifteen minutes ago, where he's going, or why.

A young man struggles to access sublimated childhood memories. He finds a technique that allows him to travel back into the past, to occupy his childhood body and change history. However, he soon finds that every change he makes has unexpected consequences.