George Miserlis

J.D. (Zach Braff) begins to think Dr. Cox (John C. McGinley) may have feet of clay when his mentor seems unable to deal with his friend Ben's (guest star Brendan Fraser, "The Mummy") potentially fatal illness. Meanwhile, Turk (Donald Faison) is upset at the news that he isn't the best surgical intern on the team, but he's even more frustrated when he finds out who is; Dr. Kelso (Ken Jenkins) asks Elliot (Sarah Chalke) to write a supposedly anonymous evaluation of him -- but the joke's on Carla (Judy Reyes) when she volunteers to ghost-write. Christa Miller ("The Drew Carey Show") play's Cox' ex-wife and Ben's sister.

The wedding day finally arrives for Turk and Carla, but they soon discover that all the planning in the world could not prepare them for the day that lay ahead. Meanwhile, J.D. struggles to mend his relationship with Elliot - Scott Foley, Tara Reid, Freddy Rodriguez, and Christa Miller Lawrence Guest Star. -- The day of the wedding Turk (Donald Faison) picks up an extra shift at the hospital to get some extra time off for his honeymoon. Inevitably, what should be a very simple procedure turns into a life and death situation when Turk discovers complications with his patient and he gets stuck at the hospital. Meanwhile, a very stressed out Carla (Judy Reyes) tries to manage the situation at the church while her groom is missing, her brother Mark (guest star Freddy Rodriguez) continues to antagonize her, and her guests are becoming unnerving. After telling Elliot (Sarah Chalke) he is not in love with her, J.D. (Zach Braff) tries to put together the broken pieces of their friendship by getting Sean (guest star Scott Foley) back together with Elliot. John C. McGinley, Ken Jenkins, and Neil Flynn also star.

Life is but a song as the cast of "Scrubs" star in a musical episode with songs written by the Tony Award-Winning composers of "Avenue Q," Robert Lopez and Jeff Marks -- Stephanie D'Abruzzo (an original cast member of "Avenue Q") guest stars - - Sacred Heart is turned into a full scale Broadway stage when Patti (Stephanie D'Abruzzo) checks in complaining of hearing incessant music. While trying to determine the cause of this strange complaint the residents of Sacred Heart star in their own musical. Carla and Turk tango over her decision to be a stay at home mom or to return to work, while Elliot struggles with telling J.D. that she doesn't want to be roommates with him anymore -- both girls hope that the boy's "Guy Love" will help them through the rough patch. All the while the staff wonders if life would be happier if everyone was in constant harmony.

When Dr. Kelso (Ken Jenkins) challenges the residents by offering a trip to a medical conference in Reno as a reward to the individual that presents the most interesting cast study J.D. (Zach Braff) refuses to play along earning him the respect of Dr. Cox (John C. McGinley). However when Elliot (Sarah Chalke) confronts him about the competition he realizes that it was in fact his fear of failure rather than his rebellious nature that kept him out of the running. Following some awkward moments and harsh words Elliot and Carla (Judy Reyes) learn they have more in common than the just their relationships with J.D. and Turk (Donald Faison) bringing them closer together. In the meantime Turk misses his opportunity to ask for a new laser on the one day a year that Dr. Kelso grants favors so he is forced to find another way to come up with the goods. Neil Flynn also stars.

Dr. Kelso (Ken Jenkins) assigns J.D. (Zach Braff) to work on a patient with Dr.Townshend (Dick Van Dyke, "Diagnosis Murder") -- his longtime friend and colleague -- but things go downhill when Dr. Townshend insists on using his "old school" treatment method which proves to be an alien concept to an inept J.D. While Kelso defends his friend's technique, Dr. Townshend's lack of current medical knowledge forces Kelso to admit his mistake. Meanwhile, Carla (Judy Reyes) tells Turk (Donald Faison) she needs time to consider his proposal because she thinks he is still too immature, prompting Turk to invite his married brother (D.L. Hughley, "The Hughleys") for a visit to show Carla how seriously he is. In addition, Elliot (Sarah Chalke) learns the sex of Jordan's (guest star Christa Miller Lawrence) baby, but Dr. Cox (John C. McGinley) and his ex-wife can't agree if they want to know.

J.D.'s (Zach Braff) ego gets in the way of his learning when Elliot (Sarah Chalke), his Co-Chief Resident, continually outperforms him with their patients. Meanwhile, Turk (Donald Faison) makes light of his diabetes by inventing a guessing game of his insulin levels with the nursing staff, leaving Carla (Judy Reyes) flustered. Elsewhere, the Janitor (Neil Flynn) feels rejected by his secret crush Elliot, when she runs off quickly from their "coffee date." Assuming his nice dress attire scared her off, he makes up a story that he was dressed to impress for his a capella band practice which leads to Elliot requesting an impromptu performance. Ken Jenkins and John C. McGinley also star.