Because you like Marion Crane in Psycho

Talking to a stranger on a train is the best decision Jesse Wallace ever made. See them in Before Sunrise.

Pengiuns, turtles, and all things scientific is where Sam's expertise lies. Girls are uncharted territory, but Sam is trying to branch out. See them in Atypical.

The party never really ends with Penny Lane, a rock-worshipping groupie who is refreshingly self-aware and free-spirited. See them in Almost Famous.

Charlotte York is an idealistic art curator who loves horses, tennis and Elizabeth Taylor movies. See them in Sex and the City.

Frank Ginsberg is the number one Proust scholar in the world, but he recently failed at committing suicide. See them in Little Miss Sunshine.

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

Blunt but anxious, Gretchen Ross bonds most easily with those who have lived tough lives like she has. See them in Donnie Darko.

Olive Hoover is an irrepressible child beauty queen (or would-be queen) who doesn't play by your rules. See them in Little Miss Sunshine.

Michael Kelso gets by on his good looks and his openhearted nature. See them in That '70s Show.

Mr. Fox will never truly be happy without a dead chicken between his chompers. See them in Fantastic Mr. Fox.

Sometimes being a supportive girlfriend like Ophelia doesn't work out too well. See them in Hamlet.