Dr. Robert "Bob Kelso" is the former Chief of Medicine of Sacred Heart on Scrubs and is played by Ken Jenkins.  Although Dr. Kelso is generally portrayed as mean-spirited and heartless, he really is just doing his job as the Chief and is looking out for the hospital's best interests.  Now retired, Dr. Kelso still hangs around the hospital and is much more human showing his softer side and ofering advice.

Kelso often refers to his obese wife Enid and his gay son Harrison, though neither have appeared on the show.

Bob Kelso Quotes

Dr. Kelso: Okay, everyone, listen up: It came to my attention that Dr. Brogan here has been moonlighting over at County Medical. Now, if he were to kill someone over there, great; but if he were to make a mistake here because of how tired he was from working at his other job, then my hospital would be liable. So, Ted, why don't you tell everyone what my policy on moonlighting is.
Ted: No... moonlighting.
Dr. Kelso: Now, Dr. Brogan will be suspended without pay for one week, but on the plus side, he gets to run around in my backyard wearing a foam suit so I can see if my dog Baxter's attack classes were worth the money!

Kelso: Can I do the interview with that little number in the second row? She said I reminded her of her grandfather and I think I can use that to at least get her top off.
Cox: You're a hell of an educator, Bob.
Kelso: I do it for them.

Scrubs Quotes

J.D. [to Cox]: you won't admit this, but you're in love with Carla.
Carla: No, he's not.
Dr. Cox: Actually, I am.
Carla: You're starting again.
J.D.: And Carla, you're mad that Turk didn't trust you enough to tell you.
Turk: See? Trust, woman, trust!
J.D.: Whatever. The point is that Turk is sorry.
Turk: Not anymore!
Carla: I can't believe you thought he was a threat.
Dr. Cox: I'm a threat!
Carla: You're not in love with me, you idealize me.
J.D.: Can we just try and stay focused...
Turk: You're mad 'cause I'm scared of losing you?
Carla: Yes, because we're stronger than that!
Dr. Cox: Apparently not!

J.D.: My man Turk, is getting it daily and nightly and ever so rightly! Ah! What up, dogg!
J.D.'s narration: Once every 4.2 seconds a man says something stupid that a woman hears and punishes him for... luckily, this wasn't one of those times.
Carla: What did you just say?
J.D.: "What up...dogg?"