Christopher (Dr. Turk) says in this episode that any of the chicks J.D. hooks up with become hideous to him. But in this same season we learned that he actually did have sex with Stacy Blue, J.D.'s former girlfriend in college.
When Dr. Cox first sees Nurse Roberts in her coma, her head is turned to the left. When he approaches the window, her head is turned to the right
When Dr. Reed goes to Dr. Kelso to offer him the dog, the apple he is eating is already browning.