Because you like Mario in Super Mario Bros.

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

It's certainly easier to get great footage of crimes when you can guarantee they'll happen. See them in Nightcrawler.

Maurice Moss is a dedicated IT guy who even talks like a computer. See them in The IT Crowd.

Relentlessly cheerful and optimistic, Erin Hannon is an office receptionist. See them in The Office.

Aldo Raine is in the killing Nazi business. And as he says, business is a-boomin'. See them in Inglourious Basterds.

First Lady Melody Grant is conspiring to stay in the White House, but she stays a few steps behind her husband because that’s where she "belongs." See them in Scandal.

Carol Peletier's credo: your strength comes from who you are, not who you used to be. See them in The Walking Dead.

Kara "Starbuck" Thrace will beat you in cards, drink you under the table, then fly circles around you in her fighter plane. See them in Battlestar Galactica.

Keren Walker is a socialite looking to avoid work, keep a constant buzz, and be as snarky as possible. See them in Will & Grace.

Cady Heron is the new girl in town who's also new to the world of high school, period. See them in Mean Girls.

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.