Because you like Chas Tenenbaum in The Royal Tenenbaums

Good-natured, sensitive, and introspective, Mason is on a lifelong path to finding himself. See them in Boyhood.

Rory Williams is a caring companion whose specialty is looking after others. See them in Doctor Who.

Raj Koothrappali is an astrophysicist who sees stars when he feebly tries to chat up women. See them in The Big Bang Theory.

A compassionate medical student, Martha Jones has found a Doctor she can really look up to. See them in Doctor Who.

Quiet and brooding, Ennis Del Mar keeps his true passions close to the chest. See them in Brokeback Mountain.

Seth is short-tempered, crude, and terrible at school, but hopefully there's nothing an epic party can't fix. See them in Superbad.

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

Jack's big imagination is never limited by his incredibly cramped surroundings. See them in Room.

A bumbling hobbit, Bilbo Baggins is becoming a part of something much larger than himself as he embarks on a quest. See them in The Hobbit: An Unexpected Journey.

Sid Jenkins is the ultimate underachiever, but he doesn't mind. Well, he pretends he doesn't. See them in Skins.

Celine's a spontaneous Parisian college student enjoying the night of her life. See them in Before Sunrise.