Because you like Marge Simpson in The Simpsons

Optimus Prime is a shapeshifting sentient robot leading a team of robots to stop evil from taking over. See them in Transformers.

The black sheep of his family, Rhett Butler grew up to have charm and to see things as they are. He just doesn't give a damn anymore. See them in Gone with the Wind.

Meticulous Arthur is always prepared, but he may not be ready to be the point man in the criminal world of dream sharing. See them in Inception.

A super-soldier, Master Chief might be more machine than man. And for humanity's sake, thank God. See them in Halo.

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

Kara "Starbuck" Thrace will beat you in cards, drink you under the table, then fly circles around you in her fighter plane. See them in Battlestar Galactica.

Liv Moore is a sarcastic high-achiever turned morally conflicted zombie. See them in iZombie.

While Jay Gatsby doesn't necessarily like to attend his parties, he knows how to throw a world-class bash. See them in The Great Gatsby.

A genetic experiment engineered to be the perfect assassin, Agent 47 is cold, professional, and lethal. See them in Hitman.

There are certain souls the surprisingly sensitive Death would rather not reap. See them in The Book Thief.

Adults call him troubled and kids call him crazy, but Donnie Darko is too busy following the instructions of a giant bunny rabbit to care. See them in Donnie Darko.