Because you like Geordi La Forge in Star Trek: The Next Generation

Rupert Giles is a librarian on the outside, fearless evil-fighter on the inside. See them in Buffy the Vampire Slayer.

Sarcastic and always complaining, C3PO is a droid that despite his quirks you always want by your side. See them in Star Wars Series.

Darcy Lewis is a razor-sharp scientist studying things that science can't explain. See them in Thor.

Pure charm, flirty and fashionable, Lando Calrissian will make sure to get the job done when necessary. See them in Star Wars Series.

A bumbling hobbit, Bilbo Baggins is becoming a part of something much larger than himself as he embarks on a quest. See them in The Hobbit: An Unexpected Journey.

Luke Skywalker always wanted to leave home, but he didn't expect that it would be as part of a quest to rescue a princess and save the galaxy. See them in Star Wars Series.

Derek Shepherd is a talented and passionate neurosurgeon. Some people call him McDreamy. See them in Grey's Anatomy.

Jack Bauer is a terrorist fighter who is scared of nothing and no one. The clock is ticking! See them in 24.

There's more to this sweet, caring landlady than meets the eye. See them in Sherlock.

His name is Inigo Montoya and whoever killed his father should be prepared to die. See them in The Princess Bride.

A consummate schemer with a knack for solving mysteries, Shawn Spencer has trouble taking anything seriously. See them in Psych.

Protecting his family's name and its power are more important to Tywin Lannister than anything or anyone. See them in Game of Thrones.