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

Now, let's talk, Ted. Just you and me. No lawyers.

Dr. Kelso

Dr. Kelso: Oh, sweet Moses. Everything has gone straight down the crapper since Enid got off the antidepressants.
Dr. Cox: I didn't know Enid suffered from depression.
Dr. Kelso: She doesn't. Those pills kill her sex drive.

Scrubs Quotes

J.D.: Holy inferiority complex Batman! How low is my self esteem that I'm the sidekick in my own fantasy?
Turk: It could be worse. You could be Alfred the butler.
J.D.: Damn you, sir

Paul: You know, I've been thinking a lot about us lately.
Elliot: Me too.
Paul: God, you drive me crazy.
Elliot: Oh, you drive me crazy!
Paul: Sometimes I just lay awake at night, thinking about how unbelievably lucky I am to have you in my life.
Elliot: Sometimes you're so controlling it makes me want to strangle you.