Because you like Jason "J.D." Dean in Heathers

Danny Zuko's car is auto-matic. Its system-matic. Its hyyyyydro-matic. Why, its greased lightning! See them in Grease.

The self-described "ghost with the most" knows the ins-and-outs of specter life like no other. Just ask him. See them in Beetlejuice.

A suave manipulator, Sebastian Valmont is valiantly fighting off a developing conscience. See them in Cruel Intentions.

Patrick Verona is a bad boy who's after a tough girl. See them in 10 Things I Hate About You.

Ferociously independent and wickedly smart, Fiona Goode is a Supreme Witch who truly reigns supreme. See them in American Horror Story.

Popular jock Andrew Clark is pretty bizarre. He's just better at hiding it, that's all. See them in The Breakfast Club.

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

This barber doesn't cut hair. Sweeney Todd sends his clients down a chute to be baked into his partner-in-crime's pies. See them in Sweeney Todd: The Demon Barber of Fleet Street.

A machete-wielding mass-murderer, Jason Voorhees is a terrifying blank slate. See them in Friday the 13th.

Mother Gothel is a great mother as long as you never, ever, break the rules. See them in Tangled.

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