Because you like Nick O'Leary in Nick and Norah's Infinite Playlist

Jesse Aarons' frustration can only find outlet in another world. See them in Bridge to Terabithia.

Samantha Jones is a try-sexual who'll try anything once. See them in Sex and the City.

Otis Milburn's mom is a sex therapist, which doesn't help when it comes to being bullied at school. See them in Sex Education.

Donna Pinciotti is strong, independent, and empathetic. No one messes with her. See them in That '70s Show.

In the simplest terms, in the most convenient definitions, people consider Brian a nerd. But he's more than that. See them in The Breakfast Club.

Once described as a "beautiful, tropical fish," Ann Perkins exudes warmth, and unlike most of her friends she also has common sense. See them in Parks and Recreation.

Brandon Teena is an adventurous young man with the courage to be himself. See them in Boys Don't Cry.

As a doctor-in-training, John Dorian should have his head in the game. But most of the time, it's in the clouds. See them in Scrubs.

Polite and clever, Annie James is not afraid to stir up a little mischief. See them in The Parent Trap.

Sam Weir lives for the simple things in life: watching Saturday Night Live and reading comic books. See them in Freaks and Geeks.

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

A sarcastic and nosy tomboy, Stephanie Tanner is understandably not crazy about being the middle child. See them in Full House.