I remember seeing a movie a couple of years back that was the story of Jeffrey Dahmer. It may have even been called Dahmer. But I can't seem to find it. I have been adding all these real-story-of-killer movies to my collection. I recently added Zodiac, Monster, and Son of Sam. Anyone remember the name of the movie I'm talking about??

The movie Jeffrey Dahmer: The Secret Life was released in 1993, starring Carl Crew as Dahmer.
In 2002, the biopic Dahmer, starring Jeremy Renner in the title role, premiered in Dahmer's hometown. The film, which portrayed Dahmer in a somewhat sympathetic light, met with protest from the victims' families, and quickly went to video.[citation needed]
Joyce Carol Oates' novel Zombie was based on Dahmer's life.[15]
American death metal band Macabre, have made many songs about Dahmer and released a concept album based on his life, called Dahmer.
The Law & Order: Criminal Intent episode "Want" is based on the Jeffrey Dahmer case. The episode, written by Elizabeth Benjamin and René Balcer, won the 2005 Edgar Award for Best Television Episode Teleplay.
The comic book My Friend Dahmer, by alternative cartoonist Derf is an account of the author's teenage friendship with Dahmer. They were both in the same class at Revere High School in Bath, Ohio.
The South Park episode "Hell on Earth 2006" featured Jeffrey Dahmer as a guest character alongside Ted Bundy and John Wayne Gacy in a spoof of The Three Stooges.
The book Lunar Park by Bret Easton Ellis details Ellis' thoughts that Dahmer was influenced by his novel American Psycho and relays 'It was the summer of Jeffrey Dahmer, the infamous homosexual/cannibal/serial killer from Wisconsin, and I became positive that he had been under the influence of American Psycho, since his crimes were just as gruesome and horrific as Patrick Bateman's."
Source: Wiki

I know you didn't really ask for any other suggestions but if you're looking to increase your collection there are a lot of good movies of that type. Silence of the Lambs is a good one to add. There is a new one coming out too called The Green River Killer but I haven't heard that much about it. Just know the basic story because it was big like 10 years back.

it’s a miniseries on the lifetime movie network called The Capture of The Green River Killer. I read a book about it a few years ago that was incredible. It was about how this one cop that spent twenty years tracking him down, and finally helped catch him with the help of Ted Bundy. I imagine the miniseries is based on the book so I hope it does it justice. It starts this Sunday I believe.

I've never read the book, and I usually like to do that before I see a movie, but I think this is a different instance because its something that happened in real life. I think i'll check it out this Sunday. I mean what else really am I doing at 8pm on a Sunday night beside dreading going back to work?

Did you see the movie? It was good watch!