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: Ahhh! Dr. Turkleton!
Turk: Actually, sir, it's Turk.
Dr. Kelso: That's your first name.
Turk: You think my name is Turk Turkleton?

Janitor: And it's no good to hide it from me, 'cause I got keys to everything. Except the third floor mental ward. Someone stole that one.
Dr. Kelso: Was he smoking a gavel?
Janitor: Seemed to be.

Scrubs Quotes

Dr. Kelso: Ahhh! Dr. Turkleton!
Turk: Actually, sir, it's Turk.
Dr. Kelso: That's your first name.
Turk: You think my name is Turk Turkleton?

J.D.: Hey, I heard a great joke. A guy walks into a dentist's office and says, "I think I'm a moth." And the dentist says, "Well, if you think you're a moth, why are you at a dentist's office?"
J.D.'s narration: Oh, no, I forgot the punchline... You can't bail out now! Stall! Stall!
J.D.: ...So the moth says "That's a good question. What kind of dentist are you?" And the dentist says, "Well, I'm a general dentist, but I...I do dabble in orthodontry - braces and such." And... and the moth says, "Orthodontry? I hear there's great money in that."
J.D.'s narration: "The light was on"!
J.D.: "But! To answer your original question, which was, if I think I'm a moth, why am I in a dentist's office? The answer is, Because the light was on!" The light! The light, James. Moths love light. So, James, other than your funny bone being broken, what seems to be the problem?