John Balma

The chief has a gentlemen's evening with his fellow surgeons; Cristina and Izzie find themselves competing for the same surgeries and the favor of the doctors performing them; Meredith tends to the survivor of a sky-diving accident.

Peggy's pursuit of the truth about Zero Matter places her on a collision course with her superiors.

Jack meets Ariana Kane, head of Alliance counterintelligence, who is investigating Emily's abduction and is blackmailing Sloane.

Shawn drops out as Cory's best man and Eric takes over, moving the wedding to the most expensive place in town.

Cory and Topanga end up at the same hotel as Alan and Amy on prom night.

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.