Because you like Penelope Garcia in Criminal Minds

In Ziva David's world, you grow up fast; you don't have a choice. See them in NCIS.

D.J. Tanner is a rebellious teen who wishes her lame dad would butt out of her personal life. See them in Full House.

Piper Halliwell is the most kind and caring Charmed One. See them in Charmed.

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

Burton Guster is a level-headed investigator with a "Super Sniffer" nose. See them in Psych.

Effie Trinket is utterly enamored with all things fashion, make-up, and style. See them in The Hunger Games .

Tina Cohen-Chang is a shy loner who becomes a fierce performer on stage. See them in Glee.

Equal parts funny and neurotic, Cory Matthews has a warm and generous spirit. See them in Boy Meets World.

Topanga Lawrence has been a put-together intellectual since basically the moment she could talk. See them in Boy Meets World.

People make more sense to the hyper-logical Temperance Brennan after they're dead. See them in Bones.

A consummate schemer with a knack for solving mysteries, Shawn Spencer has trouble taking anything seriously. See them in Psych.

Matt Flamhaff is not too concerned about being part of the popular crowd. Too bad his best friend is. See them in 13 Going on 30 .