Rene Hall

Scrubs celebrates its 100th episode with an homage to The Wizard of Oz: Zach Braff directs - J.D. (Zach Braff) is called in to work on his day off and every time he tries to go home, he is pulled into another drama. Turk (Donald Faison) searches for a heart donor to save a dying patient; Carla (Judy Reyes) is worried that she doesn't have the courage to become a parent. Meanwhile, Eliot (Sarah Chalke) doesn't think she has the brains to lead a question and answer session on a subject she knows little about. All the while the Janitor (Neil Flynn) is trying to make the hospital easier to navigate by painting color-coded lines, including a yellow line, which leads to the exit. John McGinley and Ken Jenkins also star.

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.

My baby's having a baby-Elizabeth Banks guest stars - Carla goes into labor and an excited Turk strikes up the band -- literally -- while escorting her to the hospital, but he still feels upstaged by Elliot's attempts to make Carla more comfortable. A scheme to make himself look like the hero backfires and Turk is in jeopardy of missing the birth of his child. Lucky for him the whole thing is mistakenly being broadcast over the hospital's closed circuit TV. Meanwhile, J.D. and Kim contemplate their future and the future of their child.

J.D. is determined to have lunch with Dr. Cox - Nicole Sullivan ("Mad TV") guest stars -- While working to stabilize three patients awaiting organ transplants, J.D. (Zach Braff) resolves to ask Dr. Cox (John C. McGinley) to lunch until he agrees. When he finally chases Dr. Cox to lunch, J.D. runs into annoying former patient Jill Tracy (Nicole Sullivan), who unexpectedly teaches him something about responsibility. Later, Elliot (Sarah Chalke) and Carla (Judy Reyes) discover that Todd's been lying about all his hospital "conquests" and suspect that he's been less than truthful about other issues, but Turk warns them not to meddle. Neil Flynn and Ken Jenkins also guest star.