When Elliot and Turk learn that they have to present their paper to a board they get mopey. J.D. is jealous but once he learns their parents are arriving he understands why they are sad. After paying no attention to karma and joking with Turk about his mother coming he accidentally invites his father to come visit. When Sam arrives J.D. is upset that he still acts like a buddy to him rather than a father. The next day at the hospital when Dr. Cox tosses him a decent idea, J.D. ignores it, but when he gets a chance to think about it, he heeds Dr. Cox's advice and invites his father to his lecture on heart murmurs. In the cafeteria Sam later tells J.D. that he is going to see a good friend off and have to miss the lecture. After getting upset, J.D. stops being selfish and thinks about things from his father's point of view and leaves work early to tell his father goodbye.

Meanwhile, Turk's mother Margaret and Elliot's parents Simon and Lily come to the hospital before the presentation. Turk is afraid to introduce Carla to his mother because he has yet to mention her to his mother. When the two finally meet Turk is surprised they like each other so much. Carla later notices that the two are very similar and gets freaked out that Turk is only attracted to her because she is so much like his mother. He informs her that only their good qualities match, and that he is glad they do. Elliot has to struggle with the pressure from her judgmental parents who don't approve of Sacred Heart. Simon and Dr. Kelso butt heads and Elliot has to pay at rounds. After getting worried that she only got into medicine because of her father, she realizes that she is happy where she is, and isn't upset that she got there for the wrong reasons.

Read more: http://scrubs.wikia.com/wiki/My_Old_Man#ixzz14hIQk2QA