Scrubs S04 E08 My Last Chance

"Laughter is the best medicine... Especially when it's your first day as a doctor."

When Molly takes a job at a different city, she and J.D. end up having a night of kissing, and he tries to rush to sleep with her before she leaves. Dr. Cox goes on ambulance duty with a maniac, who he eventually finds out is a woman who has lost her son to an accident.