Because you like Cookie Monster in Sesame Street

Though he has a brilliant mind for mathematics, Christopher has a much harder time processing the rest of the world. See them in The Curious Incident of the Dog in the Night-Time.

Much more than just "Coach Taylor's wife," Tami Taylor is making herself known in town as a caring, persistent guidance counselor. See them in Friday Night Lights (TV).

After alien Haruko rides in on her Vespa, giant robots spouting from Naota Nandaba's forehead soon become the least of his worries. See them in FLCL.

Kat Stratford is part of the "out" crowd and proud of it. See them in 10 Things I Hate About You.

Severus Snape is a misanthropic potions teacher with a vindictive streak. See them in Harry Potter Series.

It’s usually the good-looking, charismatic, play-by-their-own-rules types that get everyone into trouble, and Tyler Durden is Exhibit A. See them in Fight Club.

Eponine is a scrappy street urchin with a bad case of unrequited love. See them in Les Miserables.

Ron Burgundy is a news anchor who signs off with "Stay classy, San Diego" or whatever his teleprompter says. Bonus: he plays the jazz flute. See them in Anchorman: The Legend of Ron Burgundy.

A laid-back stoner, Ben Stone wasn't planning on life's ultimate responsibility. See them in Knocked Up.

Tiffany Maxwell wishes people would stop reminding her about her dead husband. See them in Silver Linings Playbook.

Fiona Gallagher wants to be able to give her siblings everything that they deserve because her parents aren't going to do it. See them in Shameless.

A jaded skeptic who only wants to get paid, Garrett becomes involved in bigger struggles that force him to be less self-serving. See them in Thief.