When Jordan and Dr Cox come to terms about being together Dr Cox sits on the hospital bed wearing blue scrubs pants. When the camera goes to a long shot he is wearing darker pants-can't tell if they are scrubs or slacks.
Turk tells Spence that the ferret Turk bought as a wedding gift for their friends only eats fresh vegetables. Ferrets are obligate carnivores and will soon die if not fed a diet consisting of primarily meat proteins.
Turk is seen checking a patient's watch during surgery. No jewelry of any kind is allowed in the operating room as it can pose a risk of infection.
When Spence tries to pour a pitcher of beer, he falls off the bar, hitting the tap open as he falls. However, no beer comes out, indicating that it's just a prop, and not attached to a keg.
Turk, a surgeon, is at the hospital on-duty late at night. No surgeries are scheduled at night (unless an emergency, in which case they would page the on-call surgeon). There is not reason for him to be there at that time of night.