Doctor Christopher Duncan Turk, who's mostly known as just Turk, is played by Donald Faison and is J.D.'s best friend on Scrubs.  He is a surgeon at Sacred Heart and quickly dates and marries one of the nurses there, Carla Espinosa.  He and Carla then have a baby Isabella together.

Turk loves to dance and is definitely one of the best surgeons and makes it well known.  His man love with J.D. is one of the best parts of the show.

Turk Quotes

Plastic Surgeon: Okaaaaaaaaaaaay. So who wants what, bigger or smaller?
Carla: My fiancé would like to have his mole removed.
Plastic Surgeon: That? That's cute. It's like a tickle button.
Turk: No it's not. It needs to go away.

J.D.: No seriously man, I want you to know if I ever need surgery again, I want you inside of me.
Turk: I wanna be the one inside you