Because you like Mrs. Robinson in The Graduate

Serena van der Woodsen is a wild child. Too wild, her friends and family might argue. See them in Gossip Girl.

Prideful and psychotic tendencies combine to make Dr. Eggman a dangerous and villain who will squash anyone in his path. See them in Sonic the Hedgehog.

Ryan Howard is a temp turned executive turned failing small-time media mogul. See them in The Office.

The brilliant Mona Vanderwaal is proof that undergoing an "extreme makeover" isn't always a good thing. See them in Pretty Little Liars.

It turns out the girl of your dreams just might have dreams of her own. See them in (500) Days of Summer.

A formerly righteous wizard, Saruman has been corrupted by the forces of evil. See them in The Lord of the Rings.

There can be no doubt that Ben Linus is a huge liar. But one man's lies are another man's necessary steps to protect his people. See them in Lost.

Peter Venkman's "research" projects are designed to get undergraduate students to sleep with him. Though it turns out he can bust ghosts. See them in Ghostbusters.

Louis de Pointe du Lac is wanting to find a way of living that doesn't make him miserable. See them in Interview with the Vampire: The Vampire Chronicles.

There's more to this sweet, caring landlady than meets the eye. See them in Sherlock.

Norma Bates may look like a harmless housewife, but don't let that fool you. See them in Bates Motel.

It's certainly easier to get great footage of crimes when you can guarantee they'll happen. See them in Nightcrawler.