Because you like Marshall Eriksen in How I Met Your Mother

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

As a doctor-in-training, John Dorian should have his head in the game. But most of the time, it's in the clouds. See them in Scrubs.

Chuck Bartowski is a sweet, laid-back electronics store/top secret government employee. See them in Chuck.

Michael Scofield is no criminal, and he didn't get jailed by accident. See them in Prison Break.

Don't tell anyone Kate Austen was under arrest when the plane crashed. See them in Lost.

Andy Dwyer might not be completely literate, but he makes up for it in spirit. See them in Parks and Recreation.

A charming acapella performer, Jesse Swanson perfectly blends being nerdy with being cool. See them in Pitch Perfect.

The Genie is the perfect buddy, granting every wish we might have and keeping life good-spirited. See them in Aladdin.

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

Underneath his preening narcissist exterior, Schmidt is, well, still kind of a preening narcissist. But he has a good heart too. See them in New Girl.

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 .

Leonard Hofstadter is the normal one among his scientist friends, though in fairness that's a low bar. See them in The Big Bang Theory.