Brandon Waters

When Turk (Donald Faison) saves a man's life at the local taco stand, he tries to keep his ego in check as Dr. Cox (John C. McGinley) takes all of the credit. To avoid ruining her new relationship with Jake (guest star Josh Randall, "Ed"), Elliot (Sarah Chalke) enlists J.D.'s (Zach Braff) help to prevent her dates from becoming too intimate. Meanwhile, Dr. Kelso (Ken Jenkins) terrorizes the hospital from the seat of his new Rascal motorized wheelchair until Janitor (Neil Flynn) takes matters into his own hands. Judy Reyes also stars.

The flight of a butterfly illustrates the delicate balance between the powers of medicine and nature. -- In a unique episode, the path of a butterfly is the deciding factor in the fate of the young doctors. At the beginning, a butterfly landing on a woman's breast sets off a chain of events ultimately resulting in the death of J.D. and Turk's patient, leaving them to wonder what they could have done to change the outcome of their day. Taking a step back in time, the butterfly takes a slightly different path, landing instead on a man's chest setting in motion an alternate chain of events that leads our characters down a very different path. Will this be enough to change the fate of their patients?