More from EW
1 of 13
13. Mark Zuckerberg
Creeped us out in: The Social Network (2010)
The ruthless, arctic-cold tech whiz (Jesse Eisenberg) invents Facebook—and Facebook stalking.
2 of 13
12. American Photojournalist
Creeped us out in: Apocalypse Now (1979)
The T.S. Eliot-quoting acolyte (Dennis Hopper) is unnerving in his intellectualized devotion to the mad Colonel Kurtz.
3 of 13
Creeped us out in: Willard (2003)
''Controls an army of rats'' is probably something the Crispin Glover character should leave off his OKCupid profile.
4 of 13
10. Barbara Covett
Creeped us out in: Notes on a Scandal (2006)
Judi Dench's cunning spinster becomes obsessed with a naïve colleague, then sabotages her marriage and career.
5 of 13
9. Sean Walsh
Creeped us out in: Circle of Friends (1995)
Alan Cumming's handsy, sleazy lech preys on Minnie Driver—all while looking like a Batman villain.
6 of 13
8. Seymour Parrish
Creeped us out in: One Hour Photo (2002)
You'll be grateful for digital photos after watching Robin Williams as this disturbing picture-developing voyeur.
7 of 13
7. Lou Bloom
Creeped us out in: Nightcrawler (2014)
Jake Gyllenhaal's videojournalistic predator must have left his moral compass in his other pants.
8 of 13
6. Rupert Pupkin
Creeped us out in: The King of Comedy (1982)
The late-night wars have been bad at times, but at least no one's gone as far as the fame-starved, host-kidnapping weirdo (Robert De Niro).
9 of 13
5. Duane Hall
Creeped us out in: Annie Hall (1977)
Before playing more prominent oddballs, Christopher Walken was Annie's bizarro brother, who threatens to heed l'appel du vide.
10 of 13
4. Harlen Maguire
Creeped us out in: Road to Perdition (2002)
Jude Law's sallow, noxious assassin is like the period-piece hit-man version of Gyllenhaal's Nightcrawler character—a photography obsessive who steps over the line between documenting and executing crimes. Plus his teeth are pretty grody.
11 of 13
3. Arthur Leigh Allen
Creeped us out in: Zodiac (2007)
John Carroll Lynch's suspect carries knives, kills chickens for dinner, and says icily (and unconvincingly), ''I'm not the Zodiac. And if I was, I certainly wouldn't tell you.''
12 of 13
2. Nurse Ratched
Creeped us out in: One Flew Over the Cuckoo's Nest (1975)
Purse-mouthed and unyielding, Louise Fletcher's villain embodies the ills of authority.
13 of 13
1. Travis Bickle
Creeped us out in: Taxi Driver (1976)
You tawkin' to him? If so, watch out. The vigilante cowboy (Robert De Niro, representing again!) has killed. And he's terrible at first dates.