Finding difficulties training his interns, J.D. asks to Elliot for some help. She tells J.D. about Sean, who gave Elliot great tips based on his dolphin training that fit perfectly for her interns. Dr. Cox finds the ideal pediatrician for his son: Dr. Norris, who acts and looks just like him. However, Dr. Cox is quick to find a problem with him once Jack develops a cough that scares both him and Jordan.

The episode was rated 7.72 from 551 votes.

Jordan's friends Allison and Maddie come to town to provide moral support for Jordan after her brother's death – however, their constant presence does not provide any relief to Dr. Cox. Meanwhile, Turk tries to impress the new female surgeon, Dr. Miller, but his first encounter serves only to leave him baffled by the opposite sex yet again. Attempting to reinforce the policy on sexual harassment at Sacred Heart, Carla is forced to teach a course where Dr. Kelso is the number-one student.

The episode was rated 7.73 from 487 votes.

A chance meeting in the elevator sparks a new friendship between J.D. and the mysterious Danni whose ongoing dialogue about her ex forces J.D. to talk about his feelings for Elliot. Carla's brother Marco comes to visit, but he still hasn't forgiven Turk for mistaking him for a valet at their mother's funeral. Unfortunately, Turk can't even apologize because Marco can't speak anything but Spanish. At the hospital, Dr. Cox relishes his new job promotion but is surprised when J.D. doesn't follow his lead in contradicting Dr. Kelso's orders.

The episode was rated 7.74 from 517 votes.

Turk is happy that he finally makes it through a solo surgery without the assistance of an attending surgeon. Dr. Cox dreads the fact that he is getting older. J.D. also makes a discovery as he finds out that many of the hospital staff don't know the Janitor as he does.

The episode was rated 7.74 from 496 votes.

J.D. is unsure what to do, when he realizes he made a mistake telling Elliot he loved her. The Janitor squares off against Dr. Cox after he loses the election of the janitors to Randall. Carla's brother Marc constantly puts Turk in a tough situation, when Turk forgets to write his wedding vows.

The episode was rated 7.76 from 454 votes.

Elliot is feeling uncomfortable using clinical terms for her patient's private parts – a result of a repressed childhood and an accidental orgasm she inflicted on a patient during a pelvic exam - so Carla tries to teach her how to say "vagina" and "penis" without blushing. Meanwhile, Dr. Cox crashes at J.D. and Turk's after taking bad advice from J.D. Carla suggests no more sex until the wedding and Turk only comes to terms with it after learning the real meaning of romance from a patient with prostate cancer. Ultimately Carla backs down on her own idea when she has a stressful day at work finally letting people make fun of her.

The episode was rated 7.76 from 503 votes.

Elliot asks Sean to move in with her, which only adds to J.D.'s problems. Turk is unsure why Dr. Miller's attitude towards him has changed, until he finds out that Carla un-invited her from their wedding. Dr. Kelso outrages Dr. Cox when he announces that Sacred Heart will begin doing full body scans, starting with an ever present hypochondriac patient, who wants any freebies he can get.

The episode was rated 7.77 from 458 votes.

J.D. hooks up with Danni again, after Sean returns, but he can't forget about his passionate night with Elliot. Meanwhile, Dr. Cox realizes, that he might actually have a crush on the one doctor he loathes.

The episode was rated 7.77 from 460 votes.

A run-in with her old flame Sean and an accident in her new car lead Elliot to the realization that nothing good has happened to her in the three years that she has been at Sacred Heart. This realization drives her to take drastic measures, including a complete makeover, both inside and out, in an attempt to change her luck. Meanwhile, J.D. gets stuck with a patient, whose diagnosis he can't quite pin down, and when Dr. Cox denies him any assistance, he looks to Carla and Turk to help him out. While Dr. Cox is busy not helping J.D., he takes the time to make amends with Dr. Kelso.

The episode was rated 7.84 from 604 votes.

An ever present butterfly prompts the question on what could have happened different as Turk looks for his lucky do-rag for surgery, and Elliot tries to find a lost stuffed animal for a child needing a bone marrow transplant.

The episode was rated 7.85 from 499 votes.

As J.D.'s relationship with Danni progresses, he and Dr. Cox are forced to spend more time together outside of the hospital, to Perry's great chagrin. Meanwhile, as they each deal with problems in their own relationships, Carla and Elliot work to find their own balance between their personal and professional relationships. Dr. Kelso accidentally punctures his eardrums giving the hospital staff an opportunity to tell him how they truly feel about him.

The episode was rated 7.85 from 515 votes.

The big day for Turk and Carla has finally arrived, but a patient holds up Turk. With Elliot still angry at him, J.D. attempts to reconcile her with Sean as a way to make everything right again in their friendship.

The episode was rated 7.86 from 450 votes.

Elliot finds herself perplexed over a simple procedure that leaves her questioning her career path. She goes to seek Dr. Kevin Casey's advice but becomes frustrated when she learns that the epiphany toilet, which the Janitor secretly installed on the roof, is getting more attention than she is. Meanwhile, Turk asks J.D. to be his best man at his wedding, which sends J.D. into sheer bliss momentarily until he hears a phone message that makes him question his friendship with Turk.

The episode was rated 7.91 from 483 votes.

J.D. believes he may have finally found a mentor in Dr. Kevin Casey, a surgeon with obsessive-compulsive disorder, and it turns out that Dr. Cox has always been jealous of the guy. Meanwhile, the Janitor and his new assistant help Kelso out with a garbage problem.

The episode was rated 7.91 from 499 votes.

Jordan's brother and sister return, but Dr. Cox learns that his brother-in-law Ben hasn't visited a doctor about his cancer in the two years he has been gone traveling the world.

The episode was rated 8.40 from 577 votes.