Movie where they killed people and erased any memories of them

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.

Agents J and K are back...in time. J has seen some inexplicable things in his 15 years with the Men in Black, but nothing, not even aliens, perplexes him as much as his wry, reticent partner. But when K's life and the fate of the planet are put at stake, Agent J will have to travel back in time to put things right. J discovers that there are secrets to the universe that K never told him - secrets that will reveal themselves as he teams up with the young Agent K to save his partner, the agency, and the future of humankind.

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.

After his girlfriend, Julie, and two best friends are killed in a tragic auto accident, Nick struggles to cope with his loss and grief. Suffering from migraine-like seizures, Nick soon discovers that he has the power to change the past via his memories. However, his time-traveling attempts to alter the past and save his one true love have unexpected and dire consequences.

Construction worker Douglas Quaid's obsession with the planet Mars leads him to visit Recall, a company that manufactures memories. When his memory implant goes wrong, Doug can no longer be sure what is and isn't reality.

Factory worker Doug Quaid takes a virtual mind-trip vacation with the Rekall company, opting for implanted memories of being a spy. When the procedure goes wrong, Quaid becomes a wanted man by the police and joins forces with a rebel fighter to stop the evil Chancellor Cohaagen.

A family falls victim to a scientific institute that removes memories and transfers them to a computer.

In a future world where memories are handled like computer files, two lovers decide to undergo a procedure and have their entire relationship wiped from their brains.

Experiencing unexplained blackouts, an ex-military alcoholic desperately tries to stop them to save his marriage, only to discover they are triggered by a trauma his mind is fighting to forget.

Guilty of having allowed greedy businessmen to take over her city and wipe its residents' memories clean, mayor Teo conspires with a motley bunch of outsiders to set things right. Armed with homemade hallucinogens, the gang sets out to free citizens from their painless, amnesiac existence.