Because you like Ilsa Lund in Casablanca

Strong-willed Norah Silverberg isn't willing to be the goody bag at anyone's pity party. See them in Nick and Norah's Infinite Playlist.

Cady Heron is the new girl in town who's also new to the world of high school, period. See them in Mean Girls.

A karate master/rocket scientist/squirrel, Sandy Cheeks is the only one who can clean up the other resident's messes in Bikini Bottom. See them in SpongeBob SquarePants.

Holland March is known to wake up hungover in full bathtubs. See them in The Nice Guys.

If this slick ad man doesn't like the conversation, he changes it—while drinking and smoking. See them in Mad Men.

Hoban Washburne shows you can be a hotshot space pilot *and* play with dinosaurs. See them in Firefly.

Veronica Mars is a sarcastic private eye whose biggest mission is surviving high school. See them in Veronica Mars.

Combining an innocent face with an insatiable bloodlust, Eli recruits friends to join the vampire way of life. See them in Let the Right One In.

More of a sex symbol than a crime-stopper, the original Silk Spectre has now become the ultimate superhero stage mom. See them in Watchmen.

Waylon Smithers would do anything for his boss, and would love to do a few things *to* him. See them in The Simpsons.