Because you like Summer Roberts in The O.C.

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 .

This is not a democracy. According to Torrance Shipman, it's a "cheerocracy." See them in Bring It On.

Sansa Stark is a fan of all things pretty. Unfortunately, her life is about to get extremely ugly. See them in Game of Thrones.

Cat Grant gets what she wants: a piping hot latte or an interview with Supergirl. See them in Supergirl.

Strong-willed Norah Silverberg isn't willing to be the goody bag at anyone's pity party. See them in Nick and Norah's Infinite Playlist.

Alex Danvers is a brilliant engineer tasked with alien threats, and one of those aliens is her adopted sister Supergirl. See them in Supergirl.

For Jack Pearson, the best thing about having triplets is giving three times the love. See them in This Is Us.

Mike Hannigan is a lawyer-turned-pianist who loves to tap into his kooky side. See them in Friends.

A blood-thirsty warrior on the battlefield, Ragnar Lothbrok is a dedicated family-man at home. See them in Vikings.

Sally Albright is high maintenance who she thinks she's low maintenance. But she's still worth it. See them in When Harry Met Sally....

Michelle Richardson's world revolves around her boyfriend. Alas, his world doesn't revolve around her. See them in Skins.

Amy Farrah Fowler deserves sainthood for putting up with Sheldon Cooper. See them in The Big Bang Theory.