When Izzie is talking to her patient, her bangs are on the right side of her face. In the next shot, her bangs switch sides and are on the left side of her face.
In the scene where Cristina is examining Fallon and you can see the monitor behind her, the screen goes from a Windows desktop screen with an error message, to a patient monitor screen, to a patient monitor screen with a Windows error message.
During Dr. Yang's presenting a patient she reels off about the patient and says "no mo-leena" for the term, 'mel-in-a', or no blood in the stool..