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

Turk: Baby, J.D. is my best friend, but, listen, if you need me to kick his ass, I will kick his ass! 'Cause I care for you.
Carla: And 'cause I'm willing to sleep with you.
Turk: Hell, yeah

J.D.: So black people can get black eyes too, huh? Who knew?
Turk: I haven't have one this bad since your Nanny Hobbes threw that rock at me.
J.D.: She thought you were robbing the house.

Scrubs Quotes

Dr. Cox: Oh, you're gonna hang onto that?
Molly: Yeah, you know, I forgot my lunch money, and it's kielbasa day in the cafeteria. Kielbasa!

Dr. Kelso: Son, a hospital staff is like a melting pot! We all need to respect each other. Now, if you think that a specific ethnic group is loud or lazy or sneaky...
J.D.: Or ridiculously closed-minded and inappropriate...
Dr. Kelso: Exactly!... Just keep it to yourself, dammit!