When J.D. has to address a group of pre-med students about what it's like to be a doctor, he strays off the beaten path and chooses to discuss his best moments as a doctor instead. When he challenges the rest of the staff to do so, they all reminisce about their fondest memories in the medical field. Meanwhile, Elliot is forced to face her fear of children when she is left in charge of a ten-year-old boy, whose father is being treated in the I.C.U. Elsewhere, Dr. Kelso gets a dose of Christmas spirit and stuns the staff with his change of heart.