They're the Villain, and the Main Character

The Psychopath/Angst

Norman Bates/Psycho

Tony Montana/Scarface


Michael Corleone/The Godfather: Part II

he gets greedy in both films, becoming the villain.

Daniel Plainview/There Will Be Blood

"I drink your milkshake! I drink it up!

Tony Soprano/The Sopranos

(thanks reallly)

Jack Torrance/The Shining

Travis Bickle/Taxi Driver

Tommy Devito, Henry Hill (Ray Liotta) and Jimmy Conway (Robert De Niro)/Goodfellas

Ryunosuke Tsukue/The Sword of Doom

Fabian/Norte, the End of History

Walter White/Breaking Bad

Walt is getting more and more evil, I still root for the guy

Alex Delarge/A Clockwork Orange

Patrick bateman/American Psycho

Vic Mackey/The Shield

Mark Lewis/Peeping Tom

Nucky Thompson/Boardwalk Empire

Ben/Man bites Dog

Belgium but French speaking, classy version of Patrick Bateman.
(thanks ant1kobe)

Robert Ford/The Assaination of Jesse
James by the Coward Robert Ford

He's like an obsessive parasite that
won't go away, Casey Affleck is brilliant.

and Warren Beaty

Bonnie Parker and Clyde Barrow/Bonnie and Clyde

and Sissy Spacek

Kit and Holly/Badlands

Detective Alonzo Harris/Training Day

Jean-Baptiste Grenouille/Perfume the Story of a Murderer

He kills women in order to create the perfect perfume.

Louis Bloom/Nightcrawler

(thanks reallly)

Dexter

Also kills people, bad people but still..

and Eric Deulen

Alex and Eric/Elephant

and John Dall

Annie Laurie Starr and Barton Tare/Gun Crazy

May

Charles Bronson/Bronson

Francis Underwood/House of Cards

Henry/Henry: Portrait of a Serial Killer

Yuri Orlov/Lord of War

Sweeney Todd

Mark Zuckerberg/The Social Network

Brandon and Phillip/Rope

Max/The Night Porter

The jackal/The Day of the Jackal

Light Yagami/Death Note

Andrew Detmer/Chronicle

Chronicle is the only film i've seen of 2012 so far. Andrew
gets a bit out of hand with his powers.

Pinky/Pinky and the Brain

D-Fens/Falling Down

Aileen/Monster

Chris Wilton/Match Point

Nick Naylor/Thank You For Smoking

Hayley Stark/Hard Candy

Kym/Rachel getting Married

Stephen glass/Shattered Glass

Frank Abagnale Jr./Catch Me If You Can

Steven Russell/I Love You, Phillip Morris

Jimmy Markum/Mystic River

Four Lions

they're wannabe jihadist suicide bombers.